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VulnerabilityPublished Updated

CVE-2026-112909: Python filelock · (filelock is a platform-independent file lock for Python

Affects python-filelockSource GCVE Database

0
Authoritative record:CVE-2026-112909· Medium 6.1

Not known to be exploited · CVSS 6.1 Medium.

Data as of 27 Oct 2026, 07:29 UTC

CVSS 3.1 base score
6.1Medium
How severe the flaw is on the 0–10 CVSS scale.
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:N

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 20 Oct 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponised: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 26 Oct 2026.

What to do

Affected software

ProductAffectedFixed in
Ubuntu 26.10python-filelockpkg:deb/ubuntu/python-filelock?arch=source&distro=stonkingOther threatsAffected
  • 3.20.3-1 – 3.32.2-1
4 affected builds
Fixed in–
Ubuntu 26.04 LTSpython-filelockpkg:deb/ubuntu/python-filelock?arch=source&distro=resoluteOther threatsAffected
  • 3.18.0-1 – 3.20.3-1
4 affected builds
Fixed in–
Ubuntu Pro 24.04 LTSpython-filelockpkg:deb/ubuntu/python-filelock?arch=source&distro=esm-apps/nobleOther threatsAffected
  • 3.12.2-1 – 3.13.1-1ubuntu0.1~esm1
4 affected builds
Fixed in–
Ubuntu Pro 22.04 LTSpython-filelockpkg:deb/ubuntu/python-filelock?arch=source&distro=esm-apps/jammyOther threatsAffected
  • 3.0.12-2 – 3.6.0-1ubuntu0.1~esm1
7 affected builds
Fixed in–
Ubuntu Pro 20.04 LTSpython-filelockpkg:deb/ubuntu/python-filelock?arch=source&distro=esm-apps/focalOther threatsAffected
  • =3.0.12-1
  • =3.0.12-2
  • =3.0.12-2ubuntu0.1~esm1
Fixed in–
Ubuntu Pro 18.04 LTSpython-filelockpkg:deb/ubuntu/python-filelock?arch=source&distro=esm-apps/bionicOther threatsAffected
  • 2.0.11-1 – 3.0.4-1ubuntu0.1~esm1
7 affected builds
Fixed in–

Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.

AI-suggested

Until a fix is available, restrict local access to trusted users to mitigate risk.

Description

Python filelock versions including 2.0.11-1 through 3.32.2-1 contain a vulnerability identified as CVE-2026-112909. The vulnerability affects platform-independent file locking functionality prior to version 4.2. It has a medium severity with a CVSS score of 6.1, indicating limited confidentiality impact but high integrity impact. No public exploits or known active exploitation have been reported. The vulnerability does not affect cloud services and no official patch or remediation details are provided in the input data.

References

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