CVE-2026-102278 - brace-expansion: DoS via uncontrolled recursion on nested brace groups causing stack exhaustion
CVE ID :CVE-2026-102278
Published : Sept. 28, 2026, 8:57 p.m. | 29 minutes ago
Description :The brace-expansion library generates arbitrary strings containing a common prefix and suffix. Prior to 1.1.20, 2.1.6, 3.0.8, and 5.0.11, deeply nested brace groups cause expand_() to recurse once per nesting level at comma-member and single-set expansion sites, exhausting the native stack before output limits can apply and potentially terminating the Node.js process. expand_ performs uncontrolled recursion for nested brace alternatives and single-part sets. deeply nested brace groups supplied as an untrusted pattern. expand_ is affected. expand is affected. Comma members is affected. Single set is affected. native stack exhaustion during nested sub-expansion. process-terminating denial of service. This issue is fixed in versions 1.1.20, 2.1.6, 3.0.8, and 5.0.11.
Severity: 0.0 | NA
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CVE ID :CVE-2026-102278
Published : Sept. 28, 2026, 8:57 p.m. | 29 minutes ago
Description :The brace-expansion library generates arbitrary strings containing a common prefix and suffix. Prior to 1.1.20, 2.1.6, 3.0.8, and 5.0.11, deeply nested brace groups cause expand_() to recurse once per nesting level at comma-member and single-set expansion sites, exhausting the native stack before output limits can apply and potentially terminating the Node.js process. expand_ performs uncontrolled recursion for nested brace alternatives and single-part sets. deeply nested brace groups supplied as an untrusted pattern. expand_ is affected. expand is affected. Comma members is affected. Single set is affected. native stack exhaustion during nested sub-expansion. process-terminating denial of service. This issue is fixed in versions 1.1.20, 2.1.6, 3.0.8, and 5.0.11.
Severity: 0.0 | NA
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CVE-2026-102279 - Laravel: XSS in Debug Page Information
CVE ID :CVE-2026-102279
Published : Sept. 28, 2026, 8:59 p.m. | 27 minutes ago
Description :Laravel is a web application framework. Prior to 12.69.0 and 13.30.0, Laravel exception debug pages with APP_DEBUG=true pass attacker-controlled input to a Tippy.js tooltip configured with allowHTML true, enabling DOM-based cross-site scripting when a user hovers over the tooltip. This issue is fixed in versions 12.69.0 and 13.30.0.
Severity: 0.0 | NA
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CVE ID :CVE-2026-102279
Published : Sept. 28, 2026, 8:59 p.m. | 27 minutes ago
Description :Laravel is a web application framework. Prior to 12.69.0 and 13.30.0, Laravel exception debug pages with APP_DEBUG=true pass attacker-controlled input to a Tippy.js tooltip configured with allowHTML true, enabling DOM-based cross-site scripting when a user hovers over the tooltip. This issue is fixed in versions 12.69.0 and 13.30.0.
Severity: 0.0 | NA
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CVE-2026-102332 - Dozzle before 11.1.2 Path Traversal via Log ZIP Download
CVE ID :CVE-2026-102332
Published : Sept. 28, 2026, 11:17 p.m. | 2 hours, 9 minutes ago
Description :Dozzle versions before 11.1.2 fail to sanitize container display names when building ZIP archive entry names in the log download endpoint. Attackers who can label containers can use path traversal sequences to write files outside the extraction directory when users download and extract logs.
Severity: 6.1 | MEDIUM
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CVE ID :CVE-2026-102332
Published : Sept. 28, 2026, 11:17 p.m. | 2 hours, 9 minutes ago
Description :Dozzle versions before 11.1.2 fail to sanitize container display names when building ZIP archive entry names in the log download endpoint. Attackers who can label containers can use path traversal sequences to write files outside the extraction directory when users download and extract logs.
Severity: 6.1 | MEDIUM
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CVE-2026-102333 - httpdbg before 2.2.1 Stored Cross-Site Scripting via javascript URL
CVE ID :CVE-2026-102333
Published : Sept. 28, 2026, 11:17 p.m. | 2 hours, 9 minutes ago
Description :httpdbg before 2.2.1 fails to validate URL schemes in recorded HTTP request URLs rendered as clickable links in the web interface. Attackers controlling traffic recorded by httpdbg can supply javascript: scheme URLs that execute malicious scripts in the application origin when clicked, allowing access to captured request and response data including headers and tokens.
Severity: 6.1 | MEDIUM
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CVE ID :CVE-2026-102333
Published : Sept. 28, 2026, 11:17 p.m. | 2 hours, 9 minutes ago
Description :httpdbg before 2.2.1 fails to validate URL schemes in recorded HTTP request URLs rendered as clickable links in the web interface. Attackers controlling traffic recorded by httpdbg can supply javascript: scheme URLs that execute malicious scripts in the application origin when clicked, allowing access to captured request and response data including headers and tokens.
Severity: 6.1 | MEDIUM
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CVE-2026-102334 - Nginx Proxy Manager through 2.16.0 Missing Brute-Force Protection
CVE ID :CVE-2026-102334
Published : Sept. 28, 2026, 11:17 p.m. | 2 hours, 9 minutes ago
Description :Nginx Proxy Manager through 2.16.0 lacks rate-limiting on authentication endpoints, allowing unauthenticated attackers to make unlimited password guesses against any account. Attackers can brute-force login credentials via POST /api/tokens and subsequently guess TOTP codes via POST /api/tokens/2fa to gain full session access and administrative control.
Severity: 9.1 | CRITICAL
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CVE ID :CVE-2026-102334
Published : Sept. 28, 2026, 11:17 p.m. | 2 hours, 9 minutes ago
Description :Nginx Proxy Manager through 2.16.0 lacks rate-limiting on authentication endpoints, allowing unauthenticated attackers to make unlimited password guesses against any account. Attackers can brute-force login credentials via POST /api/tokens and subsequently guess TOTP codes via POST /api/tokens/2fa to gain full session access and administrative control.
Severity: 9.1 | CRITICAL
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CVE-2026-102335 - Nginx Proxy Manager through 2.16.0 Improper Authorization via advanced_config
CVE ID :CVE-2026-102335
Published : Sept. 28, 2026, 11:17 p.m. | 2 hours, 9 minutes ago
Description :Nginx Proxy Manager through 2.16.0 fails to restrict the advanced_config field to administrators, allowing non-admin users with manage permissions to inject arbitrary nginx directives. Attackers can inject malicious nginx configuration such as alias directives to serve arbitrary files or control routing for their assigned hosts.
Severity: 7.1 | HIGH
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CVE ID :CVE-2026-102335
Published : Sept. 28, 2026, 11:17 p.m. | 2 hours, 9 minutes ago
Description :Nginx Proxy Manager through 2.16.0 fails to restrict the advanced_config field to administrators, allowing non-admin users with manage permissions to inject arbitrary nginx directives. Attackers can inject malicious nginx configuration such as alias directives to serve arbitrary files or control routing for their assigned hosts.
Severity: 7.1 | HIGH
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CVE-2026-101278 - Trusted Domain Project OpenDMARC PSL Wildcard opendmarc_tld.c : opendmarc_get_tld origin validation
CVE ID :CVE-2026-101278
Published : Sept. 29, 2026, midnight | 1 hour, 26 minutes ago
Description :A weakness has been identified in Trusted Domain Project OpenDMARC up to 1.4.2. This affects the function opendmarc_get_tld of the file libopendmarc/opendmarc_tld.c : of the component PSL Wildcard Handler. Executing a manipulation can lead to origin validation error. The attack may be launched remotely. The exploit has been made available to the public and could be used for attacks. The vendor was contacted early about this disclosure but did not respond in any way.
Severity: 0.0 | NA
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CVE ID :CVE-2026-101278
Published : Sept. 29, 2026, midnight | 1 hour, 26 minutes ago
Description :A weakness has been identified in Trusted Domain Project OpenDMARC up to 1.4.2. This affects the function opendmarc_get_tld of the file libopendmarc/opendmarc_tld.c : of the component PSL Wildcard Handler. Executing a manipulation can lead to origin validation error. The attack may be launched remotely. The exploit has been made available to the public and could be used for attacks. The vendor was contacted early about this disclosure but did not respond in any way.
Severity: 0.0 | NA
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CVE-2026-101279 - Trusted Domain Project OpenDMARC opendmarc_policy.c integer overflow
CVE ID :CVE-2026-101279
Published : Sept. 29, 2026, 12:15 a.m. | 1 hour, 11 minutes ago
Description :A security vulnerability has been detected in Trusted Domain Project OpenDMARC up to 1.4.2. This impacts an unknown function of the file libopendmarc/opendmarc_policy.c of the component DMARC Parser. The manipulation of the argument pct leads to integer overflow. Remote exploitation of the attack is possible. The exploit has been disclosed publicly and may be used. The vendor was contacted early about this disclosure but did not respond in any way.
Severity: 0.0 | NA
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CVE ID :CVE-2026-101279
Published : Sept. 29, 2026, 12:15 a.m. | 1 hour, 11 minutes ago
Description :A security vulnerability has been detected in Trusted Domain Project OpenDMARC up to 1.4.2. This impacts an unknown function of the file libopendmarc/opendmarc_policy.c of the component DMARC Parser. The manipulation of the argument pct leads to integer overflow. Remote exploitation of the attack is possible. The exploit has been disclosed publicly and may be used. The vendor was contacted early about this disclosure but did not respond in any way.
Severity: 0.0 | NA
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CVE-2026-101263 - Ziroom ZHOME A0101 set_online_client command injection
CVE ID :CVE-2026-101263
Published : Sept. 29, 2026, 12:17 a.m. | 1 hour, 9 minutes ago
Description :A vulnerability was found in Ziroom ZHOME A0101 1.0.1.0. This issue affects some unknown processing of the file /api/ZRQos/set_online_client. The manipulation of the argument mac results in command injection. It is possible to launch the attack remotely. The exploit has been made public and could be used. The vendor was contacted early about this disclosure but did not respond in any way.
Severity: 9.1 | CRITICAL
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CVE ID :CVE-2026-101263
Published : Sept. 29, 2026, 12:17 a.m. | 1 hour, 9 minutes ago
Description :A vulnerability was found in Ziroom ZHOME A0101 1.0.1.0. This issue affects some unknown processing of the file /api/ZRQos/set_online_client. The manipulation of the argument mac results in command injection. It is possible to launch the attack remotely. The exploit has been made public and could be used. The vendor was contacted early about this disclosure but did not respond in any way.
Severity: 9.1 | CRITICAL
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CVE-2026-101264 - Ziroom ZHOME A0101 set_passwd command injection
CVE ID :CVE-2026-101264
Published : Sept. 29, 2026, 12:17 a.m. | 1 hour, 9 minutes ago
Description :A vulnerability was determined in Ziroom ZHOME A0101 1.0.1.0. Impacted is an unknown function of the file /api/ZRnetwork/set_passwd. This manipulation of the argument password1 causes command injection. The attack can be initiated remotely. The exploit has been publicly disclosed and may be utilized. The vendor was contacted early about this disclosure but did not respond in any way.
Severity: 9.1 | CRITICAL
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CVE ID :CVE-2026-101264
Published : Sept. 29, 2026, 12:17 a.m. | 1 hour, 9 minutes ago
Description :A vulnerability was determined in Ziroom ZHOME A0101 1.0.1.0. Impacted is an unknown function of the file /api/ZRnetwork/set_passwd. This manipulation of the argument password1 causes command injection. The attack can be initiated remotely. The exploit has been publicly disclosed and may be utilized. The vendor was contacted early about this disclosure but did not respond in any way.
Severity: 9.1 | CRITICAL
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CVE-2026-101265 - Intelbras TIP 125i Básico sensitive information in source
CVE ID :CVE-2026-101265
Published : Sept. 29, 2026, 12:17 a.m. | 1 hour, 9 minutes ago
Description :A vulnerability was identified in Intelbras TIP 125i 4.3.35/4.3.41. The affected element is an unknown function of the component Básico Page. Such manipulation leads to inclusion of sensitive information in source code. The attack can be launched remotely. A high complexity level is associated with this attack. The exploitability is described as difficult. The exploit is publicly available and might be used. The vendor was contacted early about this disclosure.
Severity: 3.1 | LOW
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CVE ID :CVE-2026-101265
Published : Sept. 29, 2026, 12:17 a.m. | 1 hour, 9 minutes ago
Description :A vulnerability was identified in Intelbras TIP 125i 4.3.35/4.3.41. The affected element is an unknown function of the component Básico Page. Such manipulation leads to inclusion of sensitive information in source code. The attack can be launched remotely. A high complexity level is associated with this attack. The exploitability is described as difficult. The exploit is publicly available and might be used. The vendor was contacted early about this disclosure.
Severity: 3.1 | LOW
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CVE-2026-101277 - Trusted Domain Project OpenDKIM Tag Tokenizer dkim.c dkim_process_set less trusted source
CVE ID :CVE-2026-101277
Published : Sept. 29, 2026, 12:17 a.m. | 1 hour, 9 minutes ago
Description :A security flaw has been discovered in Trusted Domain Project OpenDKIM up to 2.11.0. The impacted element is the function dkim_process_set of the file dkim.c of the component Tag Tokenizer. Performing a manipulation results in use of less trusted source. The attack may be initiated remotely. The exploit has been released to the public and may be used for attacks. The vendor was contacted early about this disclosure but did not respond in any way.
Severity: 6.5 | MEDIUM
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CVE ID :CVE-2026-101277
Published : Sept. 29, 2026, 12:17 a.m. | 1 hour, 9 minutes ago
Description :A security flaw has been discovered in Trusted Domain Project OpenDKIM up to 2.11.0. The impacted element is the function dkim_process_set of the file dkim.c of the component Tag Tokenizer. Performing a manipulation results in use of less trusted source. The attack may be initiated remotely. The exploit has been released to the public and may be used for attacks. The vendor was contacted early about this disclosure but did not respond in any way.
Severity: 6.5 | MEDIUM
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CVE-2026-102361 - mall4j through 4.0 Missing Authentication in Password Update Endpoint
CVE ID :CVE-2026-102361
Published : Sept. 29, 2026, 12:17 a.m. | 1 hour, 9 minutes ago
Description :mall4j through 4.0 contains a missing authentication vulnerability in the PUT /user/updatePwd endpoint that allows unauthenticated attackers to reset any storefront account password. Attackers can supply a target username in the request body to overwrite passwords without verification, enabling account takeover and access to orders and personal data.
Severity: 9.3 | CRITICAL
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CVE ID :CVE-2026-102361
Published : Sept. 29, 2026, 12:17 a.m. | 1 hour, 9 minutes ago
Description :mall4j through 4.0 contains a missing authentication vulnerability in the PUT /user/updatePwd endpoint that allows unauthenticated attackers to reset any storefront account password. Attackers can supply a target username in the request body to overwrite passwords without verification, enabling account takeover and access to orders and personal data.
Severity: 9.3 | CRITICAL
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CVE-2026-102362 - mall4j through 4.0 Missing Authentication in Product Review Deletion
CVE ID :CVE-2026-102362
Published : Sept. 29, 2026, 12:17 a.m. | 1 hour, 9 minutes ago
Description :mall4j through 4.0 fails to implement authentication controls on the DELETE /prodComm endpoint in ProdCommController. Unauthenticated attackers can delete arbitrary product reviews by supplying the prodCommId parameter without authorization checks.
Severity: 6.9 | MEDIUM
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CVE ID :CVE-2026-102362
Published : Sept. 29, 2026, 12:17 a.m. | 1 hour, 9 minutes ago
Description :mall4j through 4.0 fails to implement authentication controls on the DELETE /prodComm endpoint in ProdCommController. Unauthenticated attackers can delete arbitrary product reviews by supplying the prodCommId parameter without authorization checks.
Severity: 6.9 | MEDIUM
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CVE-2026-102363 - mall4j through 4.0 Unauthenticated Shipment Tracking Disclosure via Order Number
CVE ID :CVE-2026-102363
Published : Sept. 29, 2026, 12:17 a.m. | 1 hour, 9 minutes ago
Description :mall4j through 4.0 contains a missing authentication vulnerability in the DeliveryController checkDelivery endpoint that allows unauthenticated attackers to read shipment tracking information by supplying an order number parameter. Attackers can access carrier names, waybill numbers, and complete logistics trails for any order without authentication or ownership verification.
Severity: 6.3 | MEDIUM
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CVE ID :CVE-2026-102363
Published : Sept. 29, 2026, 12:17 a.m. | 1 hour, 9 minutes ago
Description :mall4j through 4.0 contains a missing authentication vulnerability in the DeliveryController checkDelivery endpoint that allows unauthenticated attackers to read shipment tracking information by supplying an order number parameter. Attackers can access carrier names, waybill numbers, and complete logistics trails for any order without authentication or ownership verification.
Severity: 6.3 | MEDIUM
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CVE-2026-102364 - mall4j through 4.0 Improper Authentication Accepts Storefront Tokens on Admin API
CVE ID :CVE-2026-102364
Published : Sept. 29, 2026, 12:17 a.m. | 1 hour, 9 minutes ago
Description :mall4j through 4.0 fails to validate the sysType field in sa-token sessions, allowing storefront customers to authenticate as back-office users by reusing their session tokens. Attackers can register on the public storefront and use their customer session token to access admin endpoints lacking @PreAuthorize permission checks, including menu listings, file uploads, and configuration endpoints.
Severity: 5.4 | MEDIUM
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CVE ID :CVE-2026-102364
Published : Sept. 29, 2026, 12:17 a.m. | 1 hour, 9 minutes ago
Description :mall4j through 4.0 fails to validate the sysType field in sa-token sessions, allowing storefront customers to authenticate as back-office users by reusing their session tokens. Attackers can register on the public storefront and use their customer session token to access admin endpoints lacking @PreAuthorize permission checks, including menu listings, file uploads, and configuration endpoints.
Severity: 5.4 | MEDIUM
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CVE-2026-102365 - mall4j through 4.0 Missing Authorization in Admin User Address Endpoints
CVE ID :CVE-2026-102365
Published : Sept. 29, 2026, 12:17 a.m. | 1 hour, 9 minutes ago
Description :mall4j through 4.0 fails to enforce authorization checks on GET endpoints in UserAddrController that retrieve customer address data. Authenticated attackers can call /user/addr/page and /user/addr/info endpoints to harvest all customer addresses including names, phone numbers, and postal information.
Severity: 7.1 | HIGH
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CVE ID :CVE-2026-102365
Published : Sept. 29, 2026, 12:17 a.m. | 1 hour, 9 minutes ago
Description :mall4j through 4.0 fails to enforce authorization checks on GET endpoints in UserAddrController that retrieve customer address data. Authenticated attackers can call /user/addr/page and /user/addr/info endpoints to harvest all customer addresses including names, phone numbers, and postal information.
Severity: 7.1 | HIGH
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CVE-2026-102366 - mall4j through 4.0 Unrestricted File Upload in Admin File Endpoints
CVE ID :CVE-2026-102366
Published : Sept. 29, 2026, 12:17 a.m. | 1 hour, 9 minutes ago
Description :mall4j through 4.0 contains an unrestricted file upload vulnerability in FileController endpoints that lack authorization checks and accept arbitrary file types without validation. Attackers with any authenticated token can upload HTML or SVG files that execute scripts in administrator browsers when accessed from the local storage path, resulting in stored cross-site scripting.
Severity: 4.4 | MEDIUM
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CVE ID :CVE-2026-102366
Published : Sept. 29, 2026, 12:17 a.m. | 1 hour, 9 minutes ago
Description :mall4j through 4.0 contains an unrestricted file upload vulnerability in FileController endpoints that lack authorization checks and accept arbitrary file types without validation. Attackers with any authenticated token can upload HTML or SVG files that execute scripts in administrator browsers when accessed from the local storage path, resulting in stored cross-site scripting.
Severity: 4.4 | MEDIUM
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CVE-2026-102367 - mall4j through 4.0 Insufficient Session Expiration via Token Refresh
CVE ID :CVE-2026-102367
Published : Sept. 29, 2026, 12:17 a.m. | 1 hour, 9 minutes ago
Description :mall4j through 4.0 contains an insufficient session expiration vulnerability in the token refresh endpoint that fails to validate the enabled flag when issuing new sessions. Disabled user accounts can indefinitely renew their sessions through the POST /token/refresh endpoint, retaining access that account disabling was intended to remove.
Severity: 5.4 | MEDIUM
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CVE ID :CVE-2026-102367
Published : Sept. 29, 2026, 12:17 a.m. | 1 hour, 9 minutes ago
Description :mall4j through 4.0 contains an insufficient session expiration vulnerability in the token refresh endpoint that fails to validate the enabled flag when issuing new sessions. Disabled user accounts can indefinitely renew their sessions through the POST /token/refresh endpoint, retaining access that account disabling was intended to remove.
Severity: 5.4 | MEDIUM
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CVE-2026-18417 - Wild pointer dereference in Zephyr BSD sockets when a TCP listening socket reports an asynchronous error
CVE ID :CVE-2026-18417
Published : Sept. 29, 2026, 12:17 a.m. | 1 hour, 9 minutes ago
Description :The native BSD-socket layer recorded a pending asynchronous socket error by type-punning it into struct net_context's void user_data field (ctx->user_data = INT_TO_POINTER(-status) in zsock_accepted_cb(), zsock_received_cb(), zsock_connected_cb() and zsock_close_ctx() in subsys/net/lib/sockets/sockets_inet.c), reading it back with POINTER_TO_INT(). That same field is owned by the network stack for listening TCP contexts: net_tcp_accept() stores the parent context pointer there and the TCP core passes it back to the registered accept callback. A failed accept therefore left a small integer (an errno value) where the stack expected a struct net_context . When the network interface carrying a listening TCP socket goes down, close_tcp_conn() in subsys/net/ip/tcp.c invokes the accept callback with -ENETDOWN and the context's user_data. In v4.3.0 the callback was not disarmed afterwards, so a second interface-down event forwarded the previously stored errno to zsock_accepted_cb(), which dereferenced it as the parent context and performed several stores through it (sock_set_error()'s read-modify-write of socket_data, k_fifo_cancel_wait(&parent->recv_q)) — the crash described in the fix's commit message. v4.3.1 and v4.4.x carry a later change clearing conn->accept_cb after the error callback (269cb8823d3 on the v4.3 branch, 913fae5169425550f2364655298fceb79b320066 on main), which closes that repeat path; on those releases the poisoned cookie remains reachable only by a narrower race, a handshake completing alongside the interface-down still passing the stale cookie to k_fifo_put(&parent->accept_q, ...), and by getsockopt(SO_ERROR), which reads the field back unconditionally. On v4.3.0 an application that keeps a listening TCP socket open across repeated link-down events is sufficient to reach the defect; the triggering condition is a network-interface state change, not attacker-supplied packet data, so the practical attacker is one able to force the link down repeatedly (for example an adjacent attacker disrupting a wireless link) or one with local/physical access. Because both the faulting address and the stored data are fixed small constants derived from the errno value, the outcome is a wild-pointer access leading to a kernel fatal error — a denial of service (device crash or reset) rather than an attacker-directed memory corruption. The fix stores the pending error in a dedicated net_context.sock_error field and converts every producer and consumer to sock_set_error()/sock_get_error(), leaving user_data untouched. As a side effect it also stops getsockopt(SO_ERROR) — which is evaluated unconditionally — from returning the kernel address held in user_data to a userspace application.
Severity: 6.5 | MEDIUM
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CVE ID :CVE-2026-18417
Published : Sept. 29, 2026, 12:17 a.m. | 1 hour, 9 minutes ago
Description :The native BSD-socket layer recorded a pending asynchronous socket error by type-punning it into struct net_context's void user_data field (ctx->user_data = INT_TO_POINTER(-status) in zsock_accepted_cb(), zsock_received_cb(), zsock_connected_cb() and zsock_close_ctx() in subsys/net/lib/sockets/sockets_inet.c), reading it back with POINTER_TO_INT(). That same field is owned by the network stack for listening TCP contexts: net_tcp_accept() stores the parent context pointer there and the TCP core passes it back to the registered accept callback. A failed accept therefore left a small integer (an errno value) where the stack expected a struct net_context . When the network interface carrying a listening TCP socket goes down, close_tcp_conn() in subsys/net/ip/tcp.c invokes the accept callback with -ENETDOWN and the context's user_data. In v4.3.0 the callback was not disarmed afterwards, so a second interface-down event forwarded the previously stored errno to zsock_accepted_cb(), which dereferenced it as the parent context and performed several stores through it (sock_set_error()'s read-modify-write of socket_data, k_fifo_cancel_wait(&parent->recv_q)) — the crash described in the fix's commit message. v4.3.1 and v4.4.x carry a later change clearing conn->accept_cb after the error callback (269cb8823d3 on the v4.3 branch, 913fae5169425550f2364655298fceb79b320066 on main), which closes that repeat path; on those releases the poisoned cookie remains reachable only by a narrower race, a handshake completing alongside the interface-down still passing the stale cookie to k_fifo_put(&parent->accept_q, ...), and by getsockopt(SO_ERROR), which reads the field back unconditionally. On v4.3.0 an application that keeps a listening TCP socket open across repeated link-down events is sufficient to reach the defect; the triggering condition is a network-interface state change, not attacker-supplied packet data, so the practical attacker is one able to force the link down repeatedly (for example an adjacent attacker disrupting a wireless link) or one with local/physical access. Because both the faulting address and the stored data are fixed small constants derived from the errno value, the outcome is a wild-pointer access leading to a kernel fatal error — a denial of service (device crash or reset) rather than an attacker-directed memory corruption. The fix stores the pending error in a dedicated net_context.sock_error field and converts every producer and consumer to sock_set_error()/sock_get_error(), leaving user_data untouched. As a side effect it also stops getsockopt(SO_ERROR) — which is evaluated unconditionally — from returning the kernel address held in user_data to a userspace application.
Severity: 6.5 | MEDIUM
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CVE-2026-18746 - NULL pointer dereference in Zephyr LwM2M client when the CoAP Block1 context pool is exhausted
CVE ID :CVE-2026-18746
Published : Sept. 29, 2026, 12:17 a.m. | 1 hour, 9 minutes ago
Description :parse_write_op() in subsys/net/lib/lwm2m/lwm2m_message_handling.c handles inbound CoAP WRITE/CREATE requests that carry a Block1 option. For the first block of a transfer it called init_block_ctx() and then immediately stored the peer-selected block size with block_ctx->ctx.block_size = block_size before inspecting the return code. init_block_ctx() sets the caller's pointer to NULL and returns -ENOMEM when no entry of the static block1_contexts[] pool is free or timed out, so that store dereferences a NULL pointer. The pool holds CONFIG_LWM2M_NUM_BLOCK1_CONTEXT entries (default 3) and an entry is only reclaimed once its transfer completes, fails, or ages past 30 seconds. A peer that reaches the client's LwM2M socket can therefore start three block-wise writes on three distinct object paths with the CoAP More bit set and leave them incomplete, then send the first block of a fourth write on a new path to reach the unguarded dereference. Reachability is gated only by the connected UDP socket's source-address filter unless CONFIG_LWM2M_DTLS_SUPPORT is enabled — which has no default — so in a NoSec deployment an on-path or address-spoofing attacker needs no credentials; the same sequence is also reachable from a bootstrap or lower-trust server, and can be hit accidentally by a legitimate server running four concurrent block transfers. The write targets a fixed low address with a value between 0 and 7, so the consequence is a fatal memory fault (BusFault or corrupted low memory leading to a fault) rather than a usable memory-corruption primitive: the device crashes or resets. Confidentiality and integrity are not affected. The fix moves the store below the guard and validates the context pointer itself instead of the return code, so the context is only touched once it is known to be valid.
Severity: 5.9 | MEDIUM
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CVE ID :CVE-2026-18746
Published : Sept. 29, 2026, 12:17 a.m. | 1 hour, 9 minutes ago
Description :parse_write_op() in subsys/net/lib/lwm2m/lwm2m_message_handling.c handles inbound CoAP WRITE/CREATE requests that carry a Block1 option. For the first block of a transfer it called init_block_ctx() and then immediately stored the peer-selected block size with block_ctx->ctx.block_size = block_size before inspecting the return code. init_block_ctx() sets the caller's pointer to NULL and returns -ENOMEM when no entry of the static block1_contexts[] pool is free or timed out, so that store dereferences a NULL pointer. The pool holds CONFIG_LWM2M_NUM_BLOCK1_CONTEXT entries (default 3) and an entry is only reclaimed once its transfer completes, fails, or ages past 30 seconds. A peer that reaches the client's LwM2M socket can therefore start three block-wise writes on three distinct object paths with the CoAP More bit set and leave them incomplete, then send the first block of a fourth write on a new path to reach the unguarded dereference. Reachability is gated only by the connected UDP socket's source-address filter unless CONFIG_LWM2M_DTLS_SUPPORT is enabled — which has no default — so in a NoSec deployment an on-path or address-spoofing attacker needs no credentials; the same sequence is also reachable from a bootstrap or lower-trust server, and can be hit accidentally by a legitimate server running four concurrent block transfers. The write targets a fixed low address with a value between 0 and 7, so the consequence is a fatal memory fault (BusFault or corrupted low memory leading to a fault) rather than a usable memory-corruption primitive: the device crashes or resets. Confidentiality and integrity are not affected. The fix moves the store below the guard and validates the context pointer itself instead of the return code, so the context is only touched once it is known to be valid.
Severity: 5.9 | MEDIUM
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