CVE-2026-1129096.1MediumCWE-706

CVE-2026-112909: filelock: UnixFileLock truncates and chmods any regular file another user renames or hard-links onto the lock path

tox-dev · filelock

Affected: tox-dev filelock · Exploitation: unlikely (under 1%)

Not in CyberSIXT coverage yet: no article names this CVE. This page shows the public record.

0.2%probability of exploitation in the next 30 days

12th percentile

050100

Higher than 12% of scored CVEs

6.1MediumCVSS 3.1

LowMediumHighCrit.

DescriptionCVE.org

filelock is a platform-independent file lock for Python. Prior to 4.2.1, UnixFileLock can truncate a regular file renamed onto the lock path when another local user has actual rename permission, or hard-linked there under a permissive hard-link policy; when an explicit mode is requested, affected versions from 3.10.2 can also change that file's mode. This issue is fixed in version 4.2.1.

Affected products1

From the CVE record. A product or version that is not listed is unknown, not unaffected.

tox-dev · filelock< 4.2.1

On the Atlas

Every published CVE is on the CyberSIXT Atlas, grouped by weakness, vendor and month.

Open the Atlas

Exploitation: Unlikely (under 1%). EPSS under 1%, or no score yet.
CISA KEV: Not listed
Public check: No public nuclei template
Weakness: Use of Incorrectly-Resolved Name or Reference · Input Validation and Logic
Vendor: tox-dev
Published: October 2026
Band: Unlikely (under 1%), October 2026

CoverageNo articles yet

No CyberSIXT article names CVE-2026-112909 yet, so there is no coverage timeline, action brief or change log for it. Everything on this page comes from the public CVE record, CISA KEV, EPSS and the nuclei template index. Search the archive or see the CVEs in the news.