CVE-2026-27457 — Sensitive Information Exposure in Weblate

CWE-200 — Sensitive Information Exposure CWE-862 — Missing Authorization4 documents4 sources

Severity

4.3MEDIUMNVD

EPSS

0.0%

top 91.41%

CISA KEV

Not in KEV

Exploit

No known exploits

Affected products

Weblateorg Weblate Weblate

Timeline

PublishedFeb 26

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.