What is CVE-2026-40256?

CVE-2026-40256 is a medium-severity vulnerability in Weblateorg Weblate, classified under Path Traversal. CVSS score: 5.0/10. Published 2026-04-15.

How severe is CVE-2026-40256?

Medium severity. CVSS v3 base score is 5.0 out of 10.

Path Traversal in Weblateorg Weblate

CVE-2026-40256

Weblate is a web based localization tool. In versions prior to 5.17, repository-boundary validation relies on string prefix checks on resolved absolute paths. In multiple code paths, the check uses startswith against the repository root pa…

Vulnerability class: Path Traversal (Directory Traversal)

EPSS: 0.000 (5.7th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 5.0 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:N/A:N.

Affected products

Weblateorg Weblate — versions < 5.17

Weakness classification (CWE)

CWE-22 — Path Traversal

References

https://github.com/WeblateOrg/weblate/security/advisories/GHSA-ffgh-3jrf-8wvh (x_refsource_CONFIRM)
https://github.com/WeblateOrg/weblate/commit/e30dbcb33ae78e754ecef192d54f996b89cb4e15 (x_refsource_MISC)

Frequently asked questions

What is CVE-2026-40256?: CVE-2026-40256 is a medium-severity vulnerability in Weblateorg Weblate, classified under Path Traversal. CVSS score: 5.0/10. Published 2026-04-15.
How severe is CVE-2026-40256?: Medium severity. CVSS v3 base score is 5.0 out of 10.