CVE-2026-11940 tarfile extraction filter bypass allows escaping the destination directory

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...

CVE-2026-11940 tarfile extraction filter bypass allows escaping the destination directory

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...

EUVD-2026-38490

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...

CVE-2026-11940

CVE-2026-11940 concerns tarfile.extractall() in Python’s tarfile handling where a crafted archive can bypass the filter for data/tar and cause a symlink outside the destination directory to be created by abusing a hardlink referencing a deeper symlink. The extraction fallback validates the symlin...

CVE-2026-11940 tarfile extraction filter bypass allows escaping the destination directory

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...

PSF-2026-30

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...

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...

PT-2026-51546

Name of the Vulnerable Software and Affected Versions Python tarfile affected versions not specified Description A flaw exists in the extractall function when using the 'data' or 'tar' filters. A specially crafted archive containing a hardlink that references a symlink stored at a deeper path can...

PT-2026-51603

Name of the Vulnerable Software and Affected Versions Python affected versions not specified Description The tarfile module fails to properly handle the End of File EOF when a file is opened in streaming mode mode="r|". This can lead to a situation where an archive is parsed in an infinite loop...

CVE-2026-7774

A flaw was found in the tarfile.datafilter function within the Python tarfile module. A remote attacker could exploit this vulnerability by providing a specially crafted tar archive containing malicious link entries, such as symlinks with empty or directory-like names. This bypass allows the...

Microsoft Security Advisory CVE-2026-45491 – .NET Tampering Vulnerability

Executive Summary Microsoft is releasing this security advisory to provide information about a vulnerability in System.Formats.Tar. This advisory also provides guidance on what developers can do to update their applications to remove this vulnerability. A tampering vulnerability exists in the...

Python 3.10.x / 3.11.x / 3.12.x / 3.13.x < 3.13.14 / 3.14.x < 3.14.6 Path Traversal

The version of Python installed on the remote Windows host is affected by a path traversal vulnerability. tarfile.datafilter could be bypassed using crafted link entries, including symlinks with empty or directory-like names, to redirect later archive members outside the intended extraction...

BIT-PYTHON-2026-7774 tarfile.data_filter path traversal bypass allows writing outside the extraction directory

tarfile.datafilter could be bypassed using crafted link entries, including symlinks with empty or directory-like names, to redirect later archive members outside the intended extraction directory. This allowed a malicious tar archive to cause tarfile.extractall to write files outside the...

BIT-PYTHON-MIN-2026-7774 tarfile.data_filter path traversal bypass allows writing outside the extraction directory

tarfile.datafilter could be bypassed using crafted link entries, including symlinks with empty or directory-like names, to redirect later archive members outside the intended extraction directory. This allowed a malicious tar archive to cause tarfile.extractall to write files outside the...

BIT-LIBPYTHON-2026-7774 tarfile.data_filter path traversal bypass allows writing outside the extraction directory

tarfile.datafilter could be bypassed using crafted link entries, including symlinks with empty or directory-like names, to redirect later archive members outside the intended extraction directory. This allowed a malicious tar archive to cause tarfile.extractall to write files outside the...

Medium: python3.14

Issue Overview: The "tarfile" module would still apply normalization of AREGTYPE \x00 blocks to DIRTYPE, even while processing a multi-block member such as GNUTYPELONGNAME or GNUTYPELONGLINK. This could result in a crafted tar archive being misinterpreted by the tarfile module compared to other...

Amazon Linux 2023 : python3.14, python3.14-devel, python3.14-freethreading (ALAS2023-2026-1774)

It is, therefore, affected by multiple vulnerabilities as referenced in the ALAS2023-2026-1774 advisory. The tarfile module would still apply normalization of AREGTYPE \x00 blocks to DIRTYPE, even while processing a multi-block member such as GNUTYPELONGNAME or GNUTYPELONGLINK. This could result ...

tarfile.data_filter path traversal bypass allows writing outside the extraction directory

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Directory Traversal

Overview Affected versions of this package are vulnerable to Directory Traversal via the getfilteredattrs function tarfile.datafilter component that computes a symlink's directory before stripping trailing slashes. An attacker can write files outside the intended extraction directory by crafting...

CVE-2026-7774

tarfile.datafilter could be bypassed using crafted link entries, including symlinks with empty or directory-like names, to redirect later archive members outside the intended extraction directory. This allowed a malicious tar archive to cause tarfile.extractall to write files outside the...