An update for python-filelock is now available for openEuler-24.03-LTS Security Advisory openeuler-security@openeuler.org openEuler security committee openEuler-SA-2026-1239 Final 1.0 1.0 2026-01-23 Initial 2026-01-23 2026-01-23 openEuler SA Tool V1.0 2026-01-23 python-filelock security update An update for python-filelock is now available for openEuler-24.03-LTS This package contains a single module, which implements a platform independent file locking mechanism for Python. Security Fix(es): filelock is a platform-independent file lock for Python. Prior to version 3.20.3, a TOCTOU race condition vulnerability exists in the SoftFileLock implementation of the filelock package. An attacker with local filesystem access and permission to create symlinks can exploit a race condition between the permission validation and file creation to cause lock operations to fail or behave unexpectedly. The vulnerability occurs in the _acquire() method between raise_on_not_writable_file() (permission check) and os.open() (file creation). During this race window, an attacker can create a symlink at the lock file path, potentially causing the lock to operate on an unintended target file or leading to denial of service. This issue has been patched in version 3.20.3.(CVE-2026-22701) An update for python-filelock is now available for openEuler-24.03-LTS. openEuler Security has rated this update as having a security impact of medium. A Common Vunlnerability Scoring System(CVSS)base score,which gives a detailed severity rating, is available for each vulnerability from the CVElink(s) in the References section. Medium python-filelock https://www.openeuler.org/zh/security/security-bulletins/detail/?id=openEuler-SA-2026-1239 https://www.openeuler.org/en/security/cve/detail/?cveId=CVE-2026-22701 https://nvd.nist.gov/vuln/detail/CVE-2026-22701 openEuler-24.03-LTS python-filelock-3.13.1-4.oe2403.src.rpm python-filelock-doc-3.13.1-4.oe2403.noarch.rpm python-filelock-help-3.13.1-4.oe2403.noarch.rpm python3-filelock-3.13.1-4.oe2403.noarch.rpm filelock is a platform-independent file lock for Python. Prior to version 3.20.3, a TOCTOU race condition vulnerability exists in the SoftFileLock implementation of the filelock package. An attacker with local filesystem access and permission to create symlinks can exploit a race condition between the permission validation and file creation to cause lock operations to fail or behave unexpectedly. The vulnerability occurs in the _acquire() method between raise_on_not_writable_file() (permission check) and os.open() (file creation). During this race window, an attacker can create a symlink at the lock file path, potentially causing the lock to operate on an unintended target file or leading to denial of service. This issue has been patched in version 3.20.3. 2026-01-23 CVE-2026-22701 openEuler-24.03-LTS Medium 5.3 AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:L/A:H python-filelock security update 2026-01-23 https://www.openeuler.org/zh/security/security-bulletins/detail/?id=openEuler-SA-2026-1239