CVE-2026-112912

2.5 LOWpublic exploit available

Published 2026-10-20 · Updated 2026-10-21

AI analysis for this CVE has not been generated yet. Raw NVD data is shown below.

NVD description

filelock is a platform-independent file lock for Python. From 3.32.6 until 4.2.1, SoftFileLock can follow a swapped symbolic link during the conditional os.access writability check for a node without its owner-write bit, allowing another local user on a platform and directory configuration that follows the link to infer whether a chosen path exists and is writable from the observable acquisition result. This issue is fixed in version 4.2.1.

CVSS vector

CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N

Weaknesses

CWE-59

Vendors

tox-dev

Products

filelock

Public exploit & PoC references

https://github.com/tox-dev/filelock/commit/e1e825b1992f69fb6b346dc395d5ae4893536c0a[Patch]
https://github.com/tox-dev/filelock/pull/835[Patch]
https://github.com/tox-dev/filelock/releases/tag/4.2.1[Release Notes]
https://github.com/tox-dev/filelock/security/advisories/GHSA-9j6q-wvj5-jgjg[Exploit, Mitigation, Patch, Vendor Advisory]
https://github.com/tox-dev/filelock/security/advisories/GHSA-9j6q-wvj5-jgjg[Exploit, Mitigation, Patch, Vendor Advisory]

All references

Source data: NVD (nvd.nist.gov), public domain. Exploit-DB.ai adds local AI analysis for defensive use only.

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