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.
Metrics
Affected Vendors & Products
References
History
Wed, 28 Oct 2026 15:30:00 +0000
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ssvc
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Wed, 21 Oct 2026 18:00:00 +0000
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| CPEs | cpe:2.3:a:tox-dev:filelock:*:*:*:*:*:python:*:* |
Wed, 21 Oct 2026 00:30:00 +0000
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threat_severity
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threat_severity
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Tue, 20 Oct 2026 17:15:00 +0000
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| First Time appeared |
Tox-dev
Tox-dev filelock |
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| Vendors & Products |
Tox-dev
Tox-dev filelock |
Tue, 20 Oct 2026 15:00:00 +0000
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| Description | 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. | |
| Title | filelock: SoftReadWriteLock follows a lock tree swapped in after its first acquire and writes lock records into directories of the user running the lock | |
| Weaknesses | CWE-367 | |
| References |
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| Metrics |
cvssV3_1
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Status: PUBLISHED
Assigner: GitHub_M
Published: 2026-10-20T14:43:18.060Z
Updated: 2026-10-28T14:14:54.297Z
Reserved: 2026-10-19T21:30:47.245Z
Link: CVE-2026-112941
Updated: 2026-10-28T14:14:29.684Z
Status : Modified
Published: 2026-10-20T15:17:16.973
Modified: 2026-10-28T15:17:03.070
Link: CVE-2026-112941