CVE-2026-112912
- Source
- https://cve.org/CVERecord?id=CVE-2026-112912
- Import Source
- https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-112912.json
- JSON Data
- https://api.osv.dev/v1/vulns/CVE-2026-112912
- Aliases
-
- GHSA-9j6q-wvj5-jgjg
- Downstream
- Published
- 2026-10-20T14:23:18Z
- Modified
- 2026-10-22T02:48:51Z
- Severity
-
- 2.5 (Low) CVSS_V3 - CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N CVSS Calculator
- Summary
- filelock: Symlink swap during SoftFileLock's writability check leaks whether a path exists and is writable by the lock taker
- Details
-
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.
- Database specific
{ "cna_assigner": "GitHub_M", "cwe_ids": [ "CWE-59" ], "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/112xxx/CVE-2026-112912.json" }- References
-
- https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/112xxx/CVE-2026-112912.json
- https://github.com/tox-dev/filelock/commit/e1e825b1992f69fb6b346dc395d5ae4893536c0a
- https://github.com/tox-dev/filelock/pull/835
- https://github.com/tox-dev/filelock/releases/tag/4.2.1
- https://github.com/tox-dev/filelock/security/advisories/GHSA-9j6q-wvj5-jgjg
- https://nvd.nist.gov/vuln/detail/CVE-2026-112912
Affected packages
Git / github.com/tox-dev/filelock
Affected ranges
- Type
- GIT
- Repo
- https://github.com/tox-dev/filelock
- Events
- Database specific
-
Show details
{ "extracted_events": [ { "range": [ { "introduced": "3.32.6" }, { "fixed": "4.2.1" } ], "source": "AFFECTED_FIELD", "strategy": "StringRangeExpression" }, { "range": [ { "fixed": "e1e825b1992f69fb6b346dc395d5ae4893536c0a" } ], "source": "REFERENCES_COMMIT" }, { "original_tag": "4.2.1", "range": [ { "fixed": "60331bb89f325020b48bc51bde904c6446384e4a" } ], "source": "REFERENCES_TAG" } ] }