Moderate severityNVD Advisory· Published Feb 26, 2026· Updated Mar 3, 2026
Weblate: Missing access control for the AddonViewSet API exposes all addon configurations
CVE-2026-27457
Description
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 permissions. This allows any authenticated user (or anonymous users if REQUIRE_LOGIN is not set) to list and retrieve ALL addons across all projects and components via GET /api/addons/ and GET /api/addons/{id}/. Version 5.16.1 fixes the issue.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected packages
Versions sourced from the GitHub Security Advisory.
| Package | Affected versions | Patched versions |
|---|---|---|
weblatePyPI | < 5.16.1 | 5.16.1 |
Affected products
3- ghsa-coords2 versions
< 5.16.1+ 1 more
- (no CPE)range: < 5.16.1
- (no CPE)range: < 5.16.1-1.1
- Range: < 5.16.1
Patches
Vulnerability mechanics
References
8- github.com/advisories/GHSA-wppc-7cq7-cgfvghsaADVISORY
- nvd.nist.gov/vuln/detail/CVE-2026-27457ghsaADVISORY
- github.com/WeblateOrg/weblate/commit/3f58f9a4152bc0cbdd6eff5954f9c7bc4d9f0af9ghsax_refsource_MISCWEB
- github.com/WeblateOrg/weblate/commit/7802c9b121eb407c48d4adddd4f2458fb3efef0fghsax_refsource_MISCWEB
- github.com/WeblateOrg/weblate/pull/18107ghsax_refsource_MISCWEB
- github.com/WeblateOrg/weblate/pull/18164ghsax_refsource_MISCWEB
- github.com/WeblateOrg/weblate/releases/tag/weblate-5.16.1ghsax_refsource_MISCWEB
- github.com/WeblateOrg/weblate/security/advisories/GHSA-wppc-7cq7-cgfvghsax_refsource_CONFIRMWEB
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