CVE-2026-27457

MEDIUM 4.3

Weblate: Missing access control for the AddonViewSet API exposes all addon configurations

CVSS Score

4.3

EPSS Score

0.0%

EPSS Percentile

0th

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.

CWE	CWE-862 CWE-200
Vendor	weblateorg
Product	weblate
Published	Feb 26, 2026
Last Updated	Mar 3, 2026

Stay Ahead of the Next One

Get instant alerts for weblateorg weblate

Be the first to know when new medium vulnerabilities affecting weblateorg weblate are published — delivered to Slack, Telegram or Discord.

Get Free Alerts → Free · No credit card · 60 sec setup

CVSS v3 Breakdown

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

Low

Integrity

None

Availability

None

Affected Versions

WeblateOrg / weblate

< 5.16.1

References

NVD ↗ CVE.org ↗ EPSS Data ↗

github.com: https://github.com/WeblateOrg/weblate/security/advisories/GHSA-wppc-7cq7-cgfv github.com: https://github.com/WeblateOrg/weblate/pull/18107 github.com: https://github.com/WeblateOrg/weblate/pull/18164 github.com: https://github.com/WeblateOrg/weblate/commit/3f58f9a4152bc0cbdd6eff5954f9c7bc4d9f0af9 github.com: https://github.com/WeblateOrg/weblate/commit/7802c9b121eb407c48d4adddd4f2458fb3efef0f github.com: https://github.com/WeblateOrg/weblate/releases/tag/weblate-5.16.1