CVE-2026-27457

Name: CVE-2026-27457
Creator: NVD / NIST
Published: 2026-02-26T22:20:48.133+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 4.3/10EPSS 0.30%

Last modified Jun 17, 2026

CVE-2026-27457 is a medium-severity vulnerability rated 4.3/10 on the CVSS scale. 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. EPSS estimates a 0.30% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1

4.3/10

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

EPSS Probability

0.30%

21.9th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Weblate	Weblate	< 5.16.1

References

https://github.com/WeblateOrg/weblate/commit/3f58f9a4152bc0cbdd6eff5954f9c7bc4d9f0af9Patch
https://github.com/WeblateOrg/weblate/commit/7802c9b121eb407c48d4adddd4f2458fb3efef0fPatch
https://github.com/WeblateOrg/weblate/pull/18107Issue Tracking, Patch
https://github.com/WeblateOrg/weblate/pull/18164Issue Tracking, Patch
https://github.com/WeblateOrg/weblate/releases/tag/weblate-5.16.1Product, Release Notes
https://github.com/WeblateOrg/weblate/security/advisories/GHSA-wppc-7cq7-cgfvPatch, Vendor Advisory

Timeline

Published: Feb 26, 2026
Last Modified: Jun 17, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2026-27457?

How severe is CVE-2026-27457?

CVE-2026-27457 has a CVSS score of 4.3/10 (MEDIUM severity). The EPSS model estimates a 0.30% probability of exploitation in the next 30 days.

How do I fix CVE-2026-27457?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2026-27457?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST