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 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 products
- Weblate
- Weblate
- < 5.17
- Fix
- Available
- CVSS 3.1
- 5.0 MEDIUM
- EPSS
- 0.3% (25th percentile)
- Weakness
- CWE-22
- NVD status
- Analyzed
- Published
- 2026-04-15
CVE-2026-40256 at NVD
No indexed exploits for CVE-2026-40256 yet
Our index is partial: it proves presence, never absence
No exploit for CVE-2026-40256 has been indexed yet. Our index is built from live traffic and upstream syncs, so this page can only say what it knows — not that no exploit exists.