~ / search / GHSA-ffgh-3jrf-8wvh

GHSA-ffgh-3jrf-8wvh

Weblate: Prefix-Based Repository Boundary Check Bypass via Symlink/Junction Path Prefix Collision

Source: GitHub Advisory Database (reviewed) Moderate CVE-2026-40256

Packages

EcosystemPackageAffectedFixed in
PyPI weblate < 5.17 5.17

Details

As written in the advisory (Markdown source, shown as plain text).

### Impact Weblate 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). ### Patches * https://github.com/WeblateOrg/weblate/pull/18847 ### References Thanks to [m9nx4u](https://hackerone.com/m9nx4u) for reporting this issue via HackerOne.

References

External links from the advisory. They lead to third-party sites.