What is CVE-2026-112906?

CVE-2026-112906 is a medium-severity vulnerability in Tox-Dev Filelock, classified under Use of Multiple Resources with Duplicate Identifier. CVSS score: 4.7/10. Published 2026-10-20.

How severe is CVE-2026-112906?

Medium severity. CVSS v3 base score is 4.7 out of 10.

Vulnerability in Tox-Dev Filelock

CVE-2026-112906

filelock is a platform-independent file lock for Python. From 4.1.0 until 4.2.1, SoftFileLock versions from 4.1.0 can reuse a stale observation when an attacker pre-dates and removes its own marker, at least two lock-user processes are waiting, coarse or matching modification times preserve the observation, and an honest contender creates a fresh marker on the reused inode, causing that live marker to be removed as stale. This issue is fixed in version 4.2.1.

Published 2026-10-20 · last modified 2026-10-20.

CVSS v3 metric

CVSS v3 base score 4.7 (Medium). Vector: CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:H/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 >= 4.1.0, < 4.2.1

Weakness classification (CWE)

CWE-694 — Use of Multiple Resources with Duplicate Identifier

References

Frequently asked questions

What is CVE-2026-112906?: CVE-2026-112906 is a medium-severity vulnerability in Tox-Dev Filelock, classified under Use of Multiple Resources with Duplicate Identifier. CVSS score: 4.7/10. Published 2026-10-20.
How severe is CVE-2026-112906?: Medium severity. CVSS v3 base score is 4.7 out of 10.