CVE catalog
CVE-2026-112936
python-filelock: CVE-2026-112936
- Severity
- Medium · CVSS 6.1
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:L - Published
- Source
- [NVD] · [CVE record]
- EPSS
- 0.23% · Oct 25, 2026
filelock is a platform-independent file lock for Python. From 3.20.4 until 4.0.9, ReadWriteLock and AsyncReadWriteLock versions from 3.20.4 resolve the lock path and pass it to SQLite without rejecting a final symbolic link, allowing another local user who can create names in the lock directory to redirect database creation and locking or split mutual exclusion between targets. This issue is fixed in version 4.0.9.
Vulnerable and fixed packages
Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.
| Distribution | Package | Release | Version | Status |
|---|---|---|---|---|
| Debian | python-filelock | sid | 4.1.1-1 | fixed |
| Debian | python-filelock | forky | 4.1.1-1 | fixed |
| Debian | python-filelock | trixie | 3.18.0-1+deb13u1 | vulnerable |
| Debian | python-filelock | bookworm | 3.9.0-1+deb12u1 | vulnerable |
| Cpe | filelock | Not reported | 4.0.9 | fixed |
| Ubuntu | python-filelock | pro | 3.12.2-1 | vulnerable |
| Ubuntu | python-filelock | pro | 3.12.4-1 | vulnerable |
| Ubuntu | python-filelock | pro | 3.13.1-1 | vulnerable |
| Ubuntu | python-filelock | pro | 3.13.1-1ubuntu0.1~esm1 | vulnerable |
| Ubuntu | python-filelock | 26.10 | 3.20.3-1 | vulnerable |
| Ubuntu | python-filelock | 26.10 | 3.29.4-1 | vulnerable |
| Ubuntu | python-filelock | 26.10 | 3.32.0-1 | vulnerable |
| Ubuntu | python-filelock | 26.10 | 3.32.2-1 | vulnerable |
| Ubuntu | python-filelock | 26.04 | 3.18.0-1 | vulnerable |
| Ubuntu | python-filelock | 26.04 | 3.20.0-1 | vulnerable |
| Ubuntu | python-filelock | 26.04 | 3.20.2-1 | vulnerable |
| Ubuntu | python-filelock | 26.04 | 3.20.3-1 | vulnerable |
Fixed-version evidence
| Distribution | Package | Type | Release | Fixed version | Urgency | Origin | Bugs |
|---|---|---|---|---|---|---|---|
| Debian | python-filelock | source | sid | 4.0.12-1 | not yet assigned | Not reported | Not reported |
| Debian | python-filelock | source | forky | 4.0.12-1 | not yet assigned | Not reported | Not reported |
| Debian | python-filelock | source | trixie | (unfixed) | not yet assigned | Not reported | Not reported |
| Debian | python-filelock | source | bookworm | (unfixed) | not yet assigned | Not reported | Not reported |
| Cpe | filelock | cpe | Not reported | 4.0.9 | Not reported | NVD-CVE-2026-112936 | Not reported |
OpenFactory catalog packages
[Debian 12 (Bookworm)]
- [python3-filelock]Affected
Source package: [python-filelock]
Details (2)
3.9.0-1+deb12u1· all · bookwormAffected
dsa · python-filelock · debian · bookworm; dsa · python-filelock · debian · 12
3.9.0-1+deb12u1· all · bookwormAffected
dsa · python-filelock · debian · bookworm; dsa · python-filelock · debian · 12
[Debian 13 (Trixie)]
- [python3-filelock]Affected
Source package: [python-filelock]
Details (2)
3.18.0-1+deb13u1· all · trixieAffected
dsa · python-filelock · debian · 13
3.18.0-1+deb13u1· all · trixieAffected
dsa · python-filelock · debian · 13
Observed:
References
- [https://nvd.nist.gov/vuln/detail/CVE-2026-112936]
- [https://osv.dev/vulnerability/DEBIAN-CVE-2026-112936]
- [https://osv.dev/vulnerability/UBUNTU-CVE-2026-112936]
- [https://security-tracker.debian.org/tracker/CVE-2026-112936]
- [https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-112936.json]
[Debian Security Tracker] · [FIRST EPSS] · [National Vulnerability Database (NVD)] · [OSV Package Vulnerability Database] · [Red Hat security advisories and VEX]