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CVE-2026-112941

filelock: SoftReadWriteLock follows a lock tree swapped in after its first acquire and writes lock records into directories of the user running the lock PUBLISHED

Description (CNA)

filelock is a platform-independent file lock for Python. From 4.1.0 until 4.2.1, SoftReadWriteLock and AsyncSoftReadWriteLock cache a successful check of the <path>.rw lock tree and resolve its names again during later record operations, allowing another local user who can replace that tree after the first acquisition to redirect lock-record writes into directories writable by the lock user. This issue is fixed in version 4.2.1.

Affected (CNA)

Vendor / productVersions
tox-dev / filelockaffected >= 4.1.0, < 4.2.1

CWE

CWE-367

References