CVE-2026-27457
Weblate: Missing access control for the AddonViewSet API exposes all addon configurations
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.
INFO
Published Date :
Feb. 26, 2026, 10:20 p.m.
Last Modified :
Feb. 27, 2026, 5:05 p.m.
Remotely Exploit :
Yes !
Source :
[email protected]
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 3.1 | MEDIUM | [email protected] | ||||
| CVSS 3.1 | MEDIUM | MITRE-CVE |
Solution
- Update Weblate to version 5.16.1 or later.
- Ensure API access is scoped by user permissions.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-27457.
| URL | Resource |
|---|---|
| https://github.com/WeblateOrg/weblate/commit/3f58f9a4152bc0cbdd6eff5954f9c7bc4d9f0af9 | Patch |
| https://github.com/WeblateOrg/weblate/commit/7802c9b121eb407c48d4adddd4f2458fb3efef0f | Patch |
| https://github.com/WeblateOrg/weblate/pull/18107 | Issue Tracking Patch |
| https://github.com/WeblateOrg/weblate/pull/18164 | Issue Tracking Patch |
| https://github.com/WeblateOrg/weblate/releases/tag/weblate-5.16.1 | Product Release Notes |
| https://github.com/WeblateOrg/weblate/security/advisories/GHSA-wppc-7cq7-cgfv | Patch Vendor Advisory |
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-27457 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-27457
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-27457 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-27457 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
Initial Analysis by [email protected]
Feb. 27, 2026
Action Type Old Value New Value Added CWE CWE-862 Added CPE Configuration OR *cpe:2.3:a:weblate:weblate:*:*:*:*:*:*:*:* versions up to (excluding) 5.16.1 Added Reference Type GitHub, Inc.: https://github.com/WeblateOrg/weblate/commit/3f58f9a4152bc0cbdd6eff5954f9c7bc4d9f0af9 Types: Patch Added Reference Type GitHub, Inc.: https://github.com/WeblateOrg/weblate/commit/7802c9b121eb407c48d4adddd4f2458fb3efef0f Types: Patch Added Reference Type GitHub, Inc.: https://github.com/WeblateOrg/weblate/pull/18107 Types: Issue Tracking, Patch Added Reference Type GitHub, Inc.: https://github.com/WeblateOrg/weblate/pull/18164 Types: Issue Tracking, Patch Added Reference Type GitHub, Inc.: https://github.com/WeblateOrg/weblate/releases/tag/weblate-5.16.1 Types: Product, Release Notes Added Reference Type GitHub, Inc.: https://github.com/WeblateOrg/weblate/security/advisories/GHSA-wppc-7cq7-cgfv Types: Patch, Vendor Advisory -
New CVE Received by [email protected]
Feb. 26, 2026
Action Type Old Value New Value Added 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. Added CVSS V3.1 AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N Added CWE CWE-200 Added CWE CWE-862 Added Reference https://github.com/WeblateOrg/weblate/commit/3f58f9a4152bc0cbdd6eff5954f9c7bc4d9f0af9 Added Reference https://github.com/WeblateOrg/weblate/commit/7802c9b121eb407c48d4adddd4f2458fb3efef0f Added Reference https://github.com/WeblateOrg/weblate/pull/18107 Added Reference https://github.com/WeblateOrg/weblate/pull/18164 Added Reference https://github.com/WeblateOrg/weblate/releases/tag/weblate-5.16.1 Added Reference https://github.com/WeblateOrg/weblate/security/advisories/GHSA-wppc-7cq7-cgfv