CVE-2026-40256

Published: Apr 15, 2026Modified: Jun 17, 2026

5.0

Vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:N/A:N

Exploitability: 3.1 / Impact: 1.4

Source: security-advisories@github.com (Secondary)

Description

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 path. This is not path-segment aware and can be bypassed when the external path shares the same string prefix as the repository path (for example, repo and repo_outside). This issue has been fixed in version 5.17.

Affected (1)

Products: Weblate: Weblate

1 product

Configuration A

1 vulnerable

Vulnerable Software	Affected Versions
Weblate Weblate	Before 5.17

Related CWEs

Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

The product uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the product does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory.

References (2)

https://github.com/WeblateOrg/weblate/commit/e30dbcb33ae78e754ecef192d54f996b89cb4e15

Source: security-advisories@github.com

Patch

https://github.com/WeblateOrg/weblate/security/advisories/GHSA-ffgh-3jrf-8wvh

Source: security-advisories@github.com

PatchVendor Advisory

Timeline

No history available yet.