Vulnerability in Tox-Dev Filelock
CVE-2026-112912
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.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 2.5 (Low). Vector: CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N.
EPSS exploit prediction
No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.
Affected products
- Tox-Dev Filelock — versions >= 3.32.6, < 4.2.1
Weakness classification (CWE)
References
Frequently asked questions
- What is CVE-2026-112912?
- CVE-2026-112912 is a low-severity vulnerability in Tox-Dev Filelock, classified under Improper Link Resolution Before File Access. CVSS score: 2.5/10. Published 2026-10-20.
- How severe is CVE-2026-112912?
- Low severity. CVSS v3 base score is 2.5 out of 10.