CVE-2026-111482: libssh2 knownhosts prefix match

🔹 Severity: Low
🔹 Weakness: Partial String Comparison
🔹 Reported To: curl
🔹 Reported By: samueloph
🔹 State: 🟢 Resolved
🔹 Disclosed: October 26, 2026, 7:53am (UTC)
🐞 Source: HackerOne

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CVE-2026-111484: OpenSSL with SecTrust accepts bad OCSP staples

🔹 Severity: Medium
🔹 Weakness: Improper Certificate Validation
🔹 Reported To: curl
🔹 Reported By: sujitjaunjal
🔹 State: 🟢 Resolved
🔹 Disclosed: October 26, 2026, 7:53am (UTC)
🐞 Source: HackerOne

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CVE-2026-111950: TLS session cache diff scheme reuse

🔹 Severity: Low
🔹 Weakness: Incorrect Comparison
🔹 Reported To: curl
🔹 Reported By: stze
🔹 State: 🟢 Resolved
🔹 Disclosed: October 26, 2026, 7:54am (UTC)
🐞 Source: HackerOne

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CVE-2026-111953: GnuTLS SecTrust OCSP staple bypass

🔹 Severity: Low
🔹 Weakness: Improper Certificate Validation
🔹 Reported To: curl
🔹 Reported By: sujitjaunjal
🔹 State: 🟢 Resolved
🔹 Disclosed: October 26, 2026, 7:54am (UTC)
🐞 Source: HackerOne

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CVE-2026-111954: upload reader failed redirect UAF

🔹 Severity: Low
🔹 Weakness: Use After Free
🔹 Reported To: curl
🔹 Reported By: 1rhino2
🔹 State: 🟢 Resolved
🔹 Disclosed: October 26, 2026, 7:54am (UTC)
🐞 Source: HackerOne

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CVE-2026-115529: Schannel TLS auto client session resumption

🔹 Severity: Low
🔹 Weakness: Improper Authentication - Generic
🔹 Reported To: curl
🔹 Reported By: johnnykao
🔹 State: 🟢 Resolved
🔹 Disclosed: October 26, 2026, 7:54am (UTC)
🐞 Source: HackerOne

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server filename with control characters printed to terminal (`-J`)

🔹 Severity: Low
🔹 Weakness: Improper Neutralization of Escape, Meta, or Control Sequences
🔹 Reported To: curl
🔹 Reported By: gubee
🔹 State: 🔴 N/A
🔹 Disclosed: October 26, 2026, 7:55am (UTC)
🐞 Source: HackerOne

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Derived cookie Path aborts cookie jar loading in curl 8.23.0

🔹 Severity: Low
🔹 Weakness: Improper Input Validation
🔹 Reported To: curl
🔹 Reported By: threalwinky
🔹 State: 🔴 N/A
🔹 Disclosed: October 26, 2026, 8:02am (UTC)
🐞 Source: HackerOne

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Windows SSPI connection-pool probe can reuse a connection under the wrong user

🔹 Severity: Medium
🔹 Weakness: Authentication Bypass by Spoofing
🔹 Reported To: curl
🔹 Reported By: mr4bugs
🔹 State: 🔴 N/A
🔹 Disclosed: October 26, 2026, 9:09am (UTC)
🐞 Source: HackerOne

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20: HTAB before `Secure` attribute silently drops the Secure cookie flag

🔹 Severity: No Rating
🔹 Reported To: curl
🔹 Reported By: giant_anteater
🔹 State: 🔵 Duplicate
🔹 Disclosed: October 26, 2026, 9:10am (UTC)
🐞 Source: HackerOne

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14: HSTS cache import silently drops a longer-lived child beneath an includeSubDomains parent

🔹 Severity: No Rating
🔹 Weakness: Cleartext Transmission of Sensitive Information
🔹 Reported To: curl
🔹 Reported By: giant_anteater
🔹 State: 🔵 Duplicate
🔹 Disclosed: October 26, 2026, 9:10am (UTC)
🐞 Source: HackerOne

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FTP authentication options leak to a cross-origin FTP redirect with unrestricted auth disabled

🔹 Severity: Low
🔹 Weakness: Insufficiently Protected Credentials
🔹 Reported To: curl
🔹 Reported By: galcan
🔹 State: 🔴 N/A
🔹 Disclosed: October 26, 2026, 9:10am (UTC)
🐞 Source: HackerOne

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OpenSSL provider OSSL_LIB_CTX used after free via the connection shutdown list (CVE-2026-80229 fix incomplete)

🔹 Severity: Low
🔹 Weakness: Use After Free
🔹 Reported To: curl
🔹 Reported By: sujitjaunjal
🔹 State: 🔵 Duplicate
🔹 Disclosed: October 26, 2026, 9:10am (UTC)
🐞 Source: HackerOne

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A disabled account's API key still works on BMO's Mojolicious /rest/ routes, including for security-group bugs filed after the disable

🔹 Severity: High | 💰 4,000 USD
🔹 Weakness: Improper Authentication - Generic
🔹 Reported To: Mozilla
🔹 Reported By: timhaines
🔹 State: 🟢 Resolved
🔹 Disclosed: October 26, 2026, 10:49am (UTC)
🐞 Source: HackerOne

A Bugzilla instance had inconsistent authentication validation across its API implementations. The newer REST routes failed to verify account status when processing API keys, while the legacy REST API and web interface correctly rejected disabled accounts. This allowed disabled accounts' API keys to remain functional on the newer routes, including for security-sensitive bug operations. The vulnerability was…

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Vercel subdomain takeover — capitalcalc.settle.com & embed.settle.com

🔹 Severity: Medium
🔹 Reported To: Settle Vulnerability Disclosure Program
🔹 Reported By: jagdishpandey
🔹 State: 🟢 Resolved
🔹 Disclosed: October 26, 2026
🐞 Source: Bugcrowd

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Cross-protocol redirect to imap:// or smtp:// uploads the -F/MIMEPOST form and the custom Authorization/Cookie headers to the redirect target

🔹 Severity: Low
🔹 Weakness: Information Exposure Through Sent Data
🔹 Reported To: curl
🔹 Reported By: sujitjaunjal
🔹 State: 🔴 N/A
🔹 Disclosed: October 26, 2026, 12:50pm (UTC)
🐞 Source: HackerOne

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OpenSSL+Apple SecTrust: SecTrust accepts certificates that the app's CURLOPT_SSL_CTX_FUNCTION trust store or verify callback rejected

🔹 Severity: Low
🔹 Weakness: Improper Certificate Validation
🔹 Reported To: curl
🔹 Reported By: sujitjaunjal
🔹 State: 🔴 N/A
🔹 Disclosed: October 26, 2026, 12:50pm (UTC)
🐞 Source: HackerOne

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GnuTLS + Apple SecTrust discards authenticated OCSP failure

🔹 Severity: Medium
🔹 Weakness: Improper Certificate Validation
🔹 Reported To: curl
🔹 Reported By: stze
🔹 State: 🔴 N/A
🔹 Disclosed: October 26, 2026, 12:50pm (UTC)
🐞 Source: HackerOne

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OpenSSL `--cert-status` accepts indefinitely stale GOOD OCSP staples

🔹 Severity: Medium
🔹 Weakness: Improper Check for Certificate Revocation
🔹 Reported To: curl
🔹 Reported By: stze
🔹 State: 🔴 N/A
🔹 Disclosed: October 26, 2026, 12:50pm (UTC)
🐞 Source: HackerOne

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wolfSSL TLS sessions retain native-CA trust after the application narrows trust

🔹 Severity: Low
🔹 Weakness: Improper Certificate Validation
🔹 Reported To: curl
🔹 Reported By: stze
🔹 State: ⚪️ Informative
🔹 Disclosed: October 26, 2026, 12:50pm (UTC)
🐞 Source: HackerOne

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netrc credentials leaked to a cross-host redirect target on the Basic auth path (not covered by redirect credential protections)

🔹 Severity: Medium
🔹 Weakness: Insufficiently Protected Credentials
🔹 Reported To: curl
🔹 Reported By: noraqiu
🔹 State: 🔴 N/A
🔹 Disclosed: October 26, 2026, 12:50pm (UTC)
🐞 Source: HackerOne

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