Auth bypass in Weblateorg Weblate
CVE-2026-27457
Weblate is a web based localization tool. Prior to version 5.16.1, the REST API's `AddonViewSet` (`weblate/api/views.py`, line 2831) uses `queryset = Addon.objects.all()` without overriding `get_queryset()` to scope results by user permiss…
Vulnerability class: Broken Access Control
EPSS: 0.000 (10.9th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 4.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N.
Affected products
- Weblateorg Weblate — versions < 5.16.1
Weakness classification (CWE)
References
- https://github.com/WeblateOrg/weblate/security/advisories/GHSA-wppc-7cq7-cgfv (x_refsource_CONFIRM)
- https://github.com/WeblateOrg/weblate/pull/18107 (x_refsource_MISC)
- https://github.com/WeblateOrg/weblate/pull/18164 (x_refsource_MISC)
- https://github.com/WeblateOrg/weblate/commit/3f58f9a4152bc0cbdd6eff5954f9c7bc4d9f0af9 (x_refsource_MISC)
- https://github.com/WeblateOrg/weblate/commit/7802c9b121eb407c48d4adddd4f2458fb3efef0f (x_refsource_MISC)
- https://github.com/WeblateOrg/weblate/releases/tag/weblate-5.16.1 (x_refsource_MISC)
Frequently asked questions
- What is CVE-2026-27457?
- CVE-2026-27457 is a medium-severity vulnerability in Weblateorg Weblate, classified under Missing Authorization. CVSS score: 4.3/10. Published 2026-02-26.
- How severe is CVE-2026-27457?
- Medium severity. CVSS v3 base score is 4.3 out of 10.