CVE Watch5 nov 2026

CVE-2026-112908

filelock is a platform-independent file lock for Python. From version 3.30.0 until version 4.2.1, StrictSoftFileLock and AsyncStrictSoftF

CVSS

5.3

Medio

EPSS

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KEV

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Exploit Today

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0-100

Publicado: 5 nov 2026 · Última mod.: 5 nov 2026 · CWE-732

EPSS · 30d

Sin historial EPSS suficiente todavía.

Descripción técnica

filelock is a platform-independent file lock for Python. From version 3.30.0 until version 4.2.1, StrictSoftFileLock and AsyncStrictSoftFileLock on POSIX systems create coordination and claim directories without applying the caller’s restrictive lock mode. A permissive umask or inherited default ACL can leave these directories writable by another local user, allowing that user to delete an active holder’s claims. Another authorized process can then acquire the lock while the original holder remains in its critical section. An attacker can also plant malformed claims to prevent acquisition. This issue is fixed in version 4.2.1.

Referencias oficiales

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