CVE-2026-27457

low-risk
Published 2026-02-26

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.

Do I need to act?

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0.03% chance of exploitation
EPSS score — low exploit probability
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Not on CISA KEV list
No confirmed active exploitation reported to CISA
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
4
CVSS 4.3/10 Medium
NETWORK / LOW complexity

Affected Products (1)

Weblate

Affected Vendors

Weblate

References (6)

Patch https://github.com/WeblateOrg/weblate/commit/3f58f9a4152bc0cbdd6eff5954f9c7bc4d9...
Patch https://github.com/WeblateOrg/weblate/commit/7802c9b121eb407c48d4adddd4f2458fb3e...
Issue Tracking https://github.com/WeblateOrg/weblate/pull/18107
Issue Tracking https://github.com/WeblateOrg/weblate/pull/18164
Product https://github.com/WeblateOrg/weblate/releases/tag/weblate-5.16.1
Patch https://github.com/WeblateOrg/weblate/security/advisories/GHSA-wppc-7cq7-cgfv
23
/ 100
low-risk
Severity 18/34 · Moderate
Exploitability 0/34 · Minimal
Exposure 5/34 · Minimal