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Filelock

1 CVEs product

Monthly

CVE-2026-22701 PyPI MEDIUM PATCH This Month

Python's filelock SoftFileLock implementation prior to version 3.20.3 contains a TOCTOU race condition that allows local attackers with symlink creation privileges to interfere with lock file operations between permission validation and file creation. An attacker can exploit this window to create a symlink at the target lock path, causing lock operations to fail or redirect to unintended files, resulting in denial of service or unexpected behavior. Upgrade to filelock version 3.20.3 or later to remediate this vulnerability.

Denial Of Service Python Race Condition Red Hat Filelock +1
NVD GitHub
CVSS 3.1
5.3
EPSS
0.0%
EPSS 0% CVSS 5.3
MEDIUM PATCH This Month

Python's filelock SoftFileLock implementation prior to version 3.20.3 contains a TOCTOU race condition that allows local attackers with symlink creation privileges to interfere with lock file operations between permission validation and file creation. An attacker can exploit this window to create a symlink at the target lock path, causing lock operations to fail or redirect to unintended files, resulting in denial of service or unexpected behavior. Upgrade to filelock version 3.20.3 or later to remediate this vulnerability.

Denial Of Service Python Race Condition +3
NVD GitHub

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