🚨 CVE-2025-15366
The imaplib module, when passed a user-controlled command, can have additional commands injected using newlines. Mitigation rejects commands containing control characters.
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The imaplib module, when passed a user-controlled command, can have additional commands injected using newlines. Mitigation rejects commands containing control characters.
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GitHub
[3.14] gh-143921: Reject NUL, CR and LF in IMAP commands (GH-143922, … · python/cpython@2981822
…GH-153067) (GH-153137)
Combined backport of GH-143922, which rejected all control characters,
and GH-153067, which narrowed the check to NUL, CR and LF. Other
control characters are valid in quo...
Combined backport of GH-143922, which rejected all control characters,
and GH-153067, which narrowed the check to NUL, CR and LF. Other
control characters are valid in quo...
🚨 CVE-2026-34486
Missing Encryption of Sensitive Data vulnerability in Apache Tomcat due to the fix for CVE-2026-29146 allowing the bypass of the EncryptInterceptor.
This issue affects Apache Tomcat: 11.0.20, 10.1.53, 9.0.116.
Users are recommended to upgrade to version 11.0.21, 10.1.54 or 9.0.117, which fix the issue.
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Missing Encryption of Sensitive Data vulnerability in Apache Tomcat due to the fix for CVE-2026-29146 allowing the bypass of the EncryptInterceptor.
This issue affects Apache Tomcat: 11.0.20, 10.1.53, 9.0.116.
Users are recommended to upgrade to version 11.0.21, 10.1.54 or 9.0.117, which fix the issue.
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🚨 CVE-2026-12003
To allow builds of Python to be run from an in-tree layout (rather than
an installed file layout), the VPATH variable is defined at build time
and used to locate certain landmarks - specifically,
Modules/setup.local. When this landmark is found relative to VPATH
relative to the executable, Python assumes it is running in a source
tree and generates a different default sys.path. This code remains in
release builds, so that release-ready builds can be built in-tree.
On Windows, since builds are written to 'PCbuild/', the value of
VPATH is set to '..\..', which results in a landmark of
'..\..\Modules\setup.local'. This path is outside the install directory
of Python, and may have different permissions, potentially allowing a
low-privilege user to create the landmark and an alternative `Lib`
folder that will be discovered by an otherwise restricted install.
Such a setup occurs with the legacy default install location for all
users (in the now superseded EXE installer), due to how Windows allows
all users to create folders in the root directory of their OS drive.
Our recommended mitigation on Windows is to migrate away from the
legacy installer and use the new [Python install
manager](https://www.python.org/downloads/latest/pymanager/) to install
for the current user. Installs where the directory two levels above the
Python installation directory have equivalent permissions are unaffected
(in general, a per-user install cannot be modified at all by other
users, removing any escalation of privilege risk, and could be directly
modified by a privileged user, making the potential tampering
irrelevant). Alternative mitigations might include preemptively creating
and restricting access to a `Modules` directory. Be aware that only 3.13
and 3.14 will receive updated legacy installers - earlier fixes are only
provided as sources.
Platforms other than Windows allow VPATH to be overridden, but as they
don't usually use a separated directory in the build for binaries, are
unlikely to have a landmark reference outside of the install directory.
The landmark detection involving VPATH is a fallback for when a more
specific landmark - .\pybuilddir.txt - is absent, and was included for
compatibility. Future releases of Python will no longer include the
fallback, and so builds will need to generate or preserve the
pybuilddir.txt file in order to work in-tree. This landmark file has
been generated on Windows since 3.11, and on other platforms for longer.
🎖@cveNotify
To allow builds of Python to be run from an in-tree layout (rather than
an installed file layout), the VPATH variable is defined at build time
and used to locate certain landmarks - specifically,
Modules/setup.local. When this landmark is found relative to VPATH
relative to the executable, Python assumes it is running in a source
tree and generates a different default sys.path. This code remains in
release builds, so that release-ready builds can be built in-tree.
On Windows, since builds are written to 'PCbuild/', the value of
VPATH is set to '..\..', which results in a landmark of
'..\..\Modules\setup.local'. This path is outside the install directory
of Python, and may have different permissions, potentially allowing a
low-privilege user to create the landmark and an alternative `Lib`
folder that will be discovered by an otherwise restricted install.
Such a setup occurs with the legacy default install location for all
users (in the now superseded EXE installer), due to how Windows allows
all users to create folders in the root directory of their OS drive.
Our recommended mitigation on Windows is to migrate away from the
legacy installer and use the new [Python install
manager](https://www.python.org/downloads/latest/pymanager/) to install
for the current user. Installs where the directory two levels above the
Python installation directory have equivalent permissions are unaffected
(in general, a per-user install cannot be modified at all by other
users, removing any escalation of privilege risk, and could be directly
modified by a privileged user, making the potential tampering
irrelevant). Alternative mitigations might include preemptively creating
and restricting access to a `Modules` directory. Be aware that only 3.13
and 3.14 will receive updated legacy installers - earlier fixes are only
provided as sources.
Platforms other than Windows allow VPATH to be overridden, but as they
don't usually use a separated directory in the build for binaries, are
unlikely to have a landmark reference outside of the install directory.
The landmark detection involving VPATH is a fallback for when a more
specific landmark - .\pybuilddir.txt - is absent, and was included for
compatibility. Future releases of Python will no longer include the
fallback, and so builds will need to generate or preserve the
pybuilddir.txt file in order to work in-tree. This landmark file has
been generated on Windows since 3.11, and on other platforms for longer.
🎖@cveNotify
GitHub
[3.12] gh-151544: Fixes CVE-2026-12003 by removing the fallback to %V… · python/cpython@03ab7b4
…PATH%/Modules/Setup.local for discovering sources in getpath.py (GH-151545) (#151567)
gh-151544: Fixes CVE-2026-12003 by removing the fallback to %VPATH%/Modules/Setup.local for discovering sourc...
gh-151544: Fixes CVE-2026-12003 by removing the fallback to %VPATH%/Modules/Setup.local for discovering sourc...
🚨 CVE-2026-11940
tarfile.extractall() with the 'data' or 'tar'
filter could be bypassed by a crafted archive where a hardlink
references a symlink stored at a deeper name than the hardlink itself.
The extraction fallback validated the symlink at it's archived location
but recreated it at the hardlink's shallower
path, letting a relative
target the filter judged contained escape the destination directory.
This allowed a malicious tar archive to create a symlink pointing
outside the destination, enabling out-of-destination file reads or
writes. This was an incomplete fix of CVE-2025-4330.
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tarfile.extractall() with the 'data' or 'tar'
filter could be bypassed by a crafted archive where a hardlink
references a symlink stored at a deeper name than the hardlink itself.
The extraction fallback validated the symlink at it's archived location
but recreated it at the hardlink's shallower
path, letting a relative
target the filter judged contained escape the destination directory.
This allowed a malicious tar archive to create a symlink pointing
outside the destination, enabling out-of-destination file reads or
writes. This was an incomplete fix of CVE-2025-4330.
🎖@cveNotify
GitHub
gh-151558: Fix symlink escape via `tarfile` hardlink-extraction fallb… · python/cpython@27dd970
…ack (GH-151559)
🚨 CVE-2026-0864
When using the "configparser" module to write configuration files
containing multi-line text values with carriage return characters (\r) the
resulting file could be injected with unexpected keys and values if the
attacker controls the written value.
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When using the "configparser" module to write configuration files
containing multi-line text values with carriage return characters (\r) the
resulting file could be injected with unexpected keys and values if the
attacker controls the written value.
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GitHub
[3.15] gh-143927: Normalize all line endings (CR, CRLF, and LF) in co… · python/cpython@0adb386
…nfigparser (GH-143929) (GH-152002)
gh-143927: Normalize all line endings (CR, CRLF, and LF) in configparser (GH-143929)
(cherry picked from commit 5858e42c539dac8394636a6e9b30472b8994851f)
Co-au...
gh-143927: Normalize all line endings (CR, CRLF, and LF) in configparser (GH-143929)
(cherry picked from commit 5858e42c539dac8394636a6e9b30472b8994851f)
Co-au...
🚨 CVE-2026-11972
When using the "tarfile" module with a file opened in "streaming mode" (mode="r|") the tarfile module did not properly handle EOF, making archive parsing take exponentially longer.
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When using the "tarfile" module with a file opened in "streaming mode" (mode="r|") the tarfile module did not properly handle EOF, making archive parsing take exponentially longer.
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GitHub
[3.13] gh-151981: Make tarfile._Stream.seek break at EOF (GH-151982) … · python/cpython@3f031d4
…(#151993)
(cherry picked from commit f50bf13566189c8d0ce5a814f33eff3d89951896)
Co-authored-by: Petr Viktorin <encukou@gmail.com>
Co-authored-by: Stan Ulbrych <stan@python.org>
(cherry picked from commit f50bf13566189c8d0ce5a814f33eff3d89951896)
Co-authored-by: Petr Viktorin <encukou@gmail.com>
Co-authored-by: Stan Ulbrych <stan@python.org>
🚨 CVE-2026-4360
In the Tarfile.extract() function, the filter parameter is not passed properly when extracting hardlinks. An affected system that extracts content from untrusted tar files could end up writing files with an unexpected uid/gid despite the user passing filter='data' to the extract() function.
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In the Tarfile.extract() function, the filter parameter is not passed properly when extracting hardlinks. An affected system that extracts content from untrusted tar files could end up writing files with an unexpected uid/gid despite the user passing filter='data' to the extract() function.
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GitHub
[3.12] gh-151987: Pass filter_function to TarFile._extract_one() duri… · python/cpython@0367912
…ng .extract() (GH-151988) (#152611)
gh-151987: Pass filter_function to TarFile._extract_one() during .extract() (GH-151988)
(cherry picked from commit 7ccdbaba2c54250a70d7f25632152df7655a5e0a)
...
gh-151987: Pass filter_function to TarFile._extract_one() during .extract() (GH-151988)
(cherry picked from commit 7ccdbaba2c54250a70d7f25632152df7655a5e0a)
...
🚨 CVE-2026-15308
The incremental HTML parser (html.parser.HTMLParser) allows for CPU
denial-of-service through repeated unterminated markup declarations when
processing uncontrolled data.
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The incremental HTML parser (html.parser.HTMLParser) allows for CPU
denial-of-service through repeated unterminated markup declarations when
processing uncontrolled data.
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GitHub
[3.14] gh-153030: Fix quadratic complexity in incremental parsing in … · python/cpython@07efb08
…HTMLParser (GH-153031) (GH-153039)
When an unterminated construct (e.g. a tag or comment) spanned many
feed() calls, rescanning the growing buffer and concatenating new data
onto it were both qua...
When an unterminated construct (e.g. a tag or comment) spanned many
feed() calls, rescanning the growing buffer and concatenating new data
onto it were both qua...
🚨 CVE-2026-13065
A user with read-only privileges is able to craft an aggregation pipeline using the $linearFill window function operator with a specific sortBy expression type to cause the mongod process to terminate abnormally, resulting in denial of service. The issue stems from insufficient validation of sort specifications during execution.
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A user with read-only privileges is able to craft an aggregation pipeline using the $linearFill window function operator with a specific sortBy expression type to cause the mongod process to terminate abnormally, resulting in denial of service. The issue stems from insufficient validation of sort specifications during execution.
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🚨 CVE-2026-13066
Improper handling of DBPointer objects during BSON serialization in MongoDB's server-side JavaScript engine can result in internal process memory contents being included in data returned to the client. This constitutes an unintended information disclosure affecting deployments that use server-side JavaScript.
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Improper handling of DBPointer objects during BSON serialization in MongoDB's server-side JavaScript engine can result in internal process memory contents being included in data returned to the client. This constitutes an unintended information disclosure affecting deployments that use server-side JavaScript.
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🚨 CVE-2026-13067
When PROXY protocol v2 is used on the Unix domain socket path, roles derived from X.509 client certificates may not be validated against the configured tlsCATrusts allow-list. This can result in unintended role assignments following MONGODB-X509 authentication. Affected scenarios require local access to the proxy Unix domain socket and a valid X.509 certificate issued by a trusted certificate authority.
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When PROXY protocol v2 is used on the Unix domain socket path, roles derived from X.509 client certificates may not be validated against the configured tlsCATrusts allow-list. This can result in unintended role assignments following MONGODB-X509 authentication. Affected scenarios require local access to the proxy Unix domain socket and a valid X.509 certificate issued by a trusted certificate authority.
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🚨 CVE-2026-39875
A permissions issue was addressed with additional restrictions. This issue is fixed in macOS Sequoia 15.7.8, macOS Sonoma 14.8.8, macOS Tahoe 26.6. A malicious app may be able to gain root privileges.
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A permissions issue was addressed with additional restrictions. This issue is fixed in macOS Sequoia 15.7.8, macOS Sonoma 14.8.8, macOS Tahoe 26.6. A malicious app may be able to gain root privileges.
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Apple Support
About the security content of macOS Tahoe 26.6 - Apple Support
This document describes the security content of macOS Tahoe 26.6.
🚨 CVE-2026-6879
`Element.findall()` and fully-consumed `Element.iterfind()` exhibit `O(n^2)` time complexity when using XPath index predicates (e.g. `[1]`, `[last()]`, `[last()-N]`) on XML documents with many same-tag siblings. `Element.find()` is only affected when the first match is near the end of the sibling list, such as with `[last()]` or `[last()-N]`; `.//item[1]` short-circuits after the first match.
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`Element.findall()` and fully-consumed `Element.iterfind()` exhibit `O(n^2)` time complexity when using XPath index predicates (e.g. `[1]`, `[last()]`, `[last()-N]`) on XML documents with many same-tag siblings. `Element.find()` is only affected when the first match is near the end of the sibling list, such as with `[last()]` or `[last()-N]`; `.//item[1]` short-circuits after the first match.
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GitHub
[3.15] gh-152674: Avoid quadratic behavior in xml.etree.ElementPath i… · python/cpython@02c08e6
…ndex predicates (GH-152676) (GH-154812)
(cherry picked from commit 2ffab083782968a4d732738f4f1dff6bbd69d2b0)
Co-authored-by: Petr Viktorin <encukou@gmail.com>
Co-authored-by: Alexi...
(cherry picked from commit 2ffab083782968a4d732738f4f1dff6bbd69d2b0)
Co-authored-by: Petr Viktorin <encukou@gmail.com>
Co-authored-by: Alexi...
🚨 CVE-2026-14519
IBM App Connect Enterprise 13.0.1.0 through 13.0.7.2, and 12.0.1.0 through 12.0.12.27 could allow a remote attacker to read arbitrary files due to a path traversal vulnerability.
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IBM App Connect Enterprise 13.0.1.0 through 13.0.7.2, and 12.0.1.0 through 12.0.12.27 could allow a remote attacker to read arbitrary files due to a path traversal vulnerability.
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Ibm
Security Bulletin: IBM App Connect Enterprise is vulnerable to an arbitrary file read and arbitrary changes to configuration settings…
IBM App Connect Enterprise is vulnerable to an arbitrary file read and arbitrary changes to configuration settings.
🚨 CVE-2026-14522
IBM App Connect Enterprise 13.0.1.0 through 13.0.7.2, and 12.0.1.0 through 12.0.12.27 could allow a remote attacker to execute arbitrary commands due to improper neutralization of CRLF characters.
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IBM App Connect Enterprise 13.0.1.0 through 13.0.7.2, and 12.0.1.0 through 12.0.12.27 could allow a remote attacker to execute arbitrary commands due to improper neutralization of CRLF characters.
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Ibm
Security Bulletin: IBM App Connect Enterprise is vulnerable to an arbitrary file read and arbitrary changes to configuration settings…
IBM App Connect Enterprise is vulnerable to an arbitrary file read and arbitrary changes to configuration settings.
🚨 CVE-2026-15435
IBM App Connect Enterprise 13.0.1.0 through 13.0.7.2, and 12.0.1.0 through 12.0.12.27 could allow a remote attacker to traverse directories on the system. An attacker could send a specially crafted URL request containing "dot dot" sequences (/../) to write arbitrary files on the system.
🎖@cveNotify
IBM App Connect Enterprise 13.0.1.0 through 13.0.7.2, and 12.0.1.0 through 12.0.12.27 could allow a remote attacker to traverse directories on the system. An attacker could send a specially crafted URL request containing "dot dot" sequences (/../) to write arbitrary files on the system.
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Ibm
Security Bulletin: IBM App Connect Enterprise is vulnerable to arbitrary file write vulnerability (CVE-2026-15435)
IBM App Connect Enterprise is vulnerable to arbitrary file write vulnerability.
🚨 CVE-2026-56569
HCL iControl was affected by Sensitive Data Exposure vulnerabilities. It involves the public exposure of internal configuration files due to improper web server or application hardening.
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HCL iControl was affected by Sensitive Data Exposure vulnerabilities. It involves the public exposure of internal configuration files due to improper web server or application hardening.
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Hcl-Software
Security Bulletin: Multiple security vulnerabilities affect HCL iControl - Customer Support
HCL iControl is affected by multiple security vulnerabilities.
🚨 CVE-2026-56570
HCL iControl was affected by Auto complete Enabled vulnerabilities. It involves expose sensitive information such as: Valid usernames, Email addresses used for login, Account identifiers If the system is accessed from shared environments, attackers may enumerate valid usernames through browser suggestions.
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HCL iControl was affected by Auto complete Enabled vulnerabilities. It involves expose sensitive information such as: Valid usernames, Email addresses used for login, Account identifiers If the system is accessed from shared environments, attackers may enumerate valid usernames through browser suggestions.
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Hcl-Software
Security Bulletin: Multiple security vulnerabilities affect HCL iControl - Customer Support
HCL iControl is affected by multiple security vulnerabilities.
🚨 CVE-2026-67289
FreeRDP before 3.29.0 (affected versions <= 3.28.0) does not validate CRLF and control characters in the server-controlled RDP redirection TargetNetAddress field. This value is copied into the client's ServerHostname and, when the client connects through an HTTP proxy, is written directly into the proxy CONNECT request line and Host header by http_proxy_connect() without filtering. A malicious or compromised RDP server can send a crafted redirection PDU containing embedded control characters to inject arbitrary headers/requests into the HTTP proxy CONNECT request.
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FreeRDP before 3.29.0 (affected versions <= 3.28.0) does not validate CRLF and control characters in the server-controlled RDP redirection TargetNetAddress field. This value is copied into the client's ServerHostname and, when the client connects through an HTTP proxy, is written directly into the proxy CONNECT request line and Host header by http_proxy_connect() without filtering. A malicious or compromised RDP server can send a crafted redirection PDU containing embedded control characters to inject arbitrary headers/requests into the HTTP proxy CONNECT request.
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GitHub
Merge pull request #13028 from akallabeth/path-checks · FreeRDP/FreeRDP@f3b4347
Path checks
🚨 CVE-2026-67293
FreeRDP before 3.29.0 (affected versions <= 3.28.0) contains an improper certificate hostname validation vulnerability. The TLS hostname matcher (tls_match_hostname() in libfreerdp/crypto/tls.c) treats a wildcard pattern such as *.example.com as matching any hostname ending in .example.com, so it incorrectly accepts a wildcard certificate for multi-label subdomains like a.b.example.com (which OpenSSL's X509_check_host() rejects). This weakens TLS server authentication under wildcard-certificate conditions.
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FreeRDP before 3.29.0 (affected versions <= 3.28.0) contains an improper certificate hostname validation vulnerability. The TLS hostname matcher (tls_match_hostname() in libfreerdp/crypto/tls.c) treats a wildcard pattern such as *.example.com as matching any hostname ending in .example.com, so it incorrectly accepts a wildcard certificate for multi-label subdomains like a.b.example.com (which OpenSSL's X509_check_host() rejects). This weakens TLS server authentication under wildcard-certificate conditions.
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GitHub
Merge pull request #13028 from akallabeth/path-checks · FreeRDP/FreeRDP@f3b4347
Path checks
🚨 CVE-2026-67324
GitPython 3.1.50 fails to recognize joined short-option forms such as -u<value> (the short form of --upload-pack=<value>) when enforcing its default unsafe-option gate. When an application passes attacker-influenced clone options into Repo.clone_from(..., multi_options=..., allow_unsafe_options=False), an attacker can supply -u<helper> to bypass the gate that blocks --upload-pack/-u, causing Git to execute the specified helper command during clone. Fixed in 3.1.51.
🎖@cveNotify
GitPython 3.1.50 fails to recognize joined short-option forms such as -u<value> (the short form of --upload-pack=<value>) when enforcing its default unsafe-option gate. When an application passes attacker-influenced clone options into Repo.clone_from(..., multi_options=..., allow_unsafe_options=False), an attacker can supply -u<helper> to bypass the gate that blocks --upload-pack/-u, causing Git to execute the specified helper command during clone. Fixed in 3.1.51.
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GitHub
GitPython unsafe clone option gate bypass through joined short options
`GitPython` version `3.1.50` blocks unsafe `git clone` options such as `--upload-pack`, `-u`, `--config`, and `-c` unless callers explicitly pass `allow_unsafe_options=True`. However, the default u...