CVE-2026-27457— Weblate: Missing access control for the AddonViewSet API exposes all addon configurations
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I. Basic Information for CVE-2026-27457
Vulnerability Information
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Vulnerability Title
Weblate: Missing access control for the AddonViewSet API exposes all addon configurations
Source: NVD (National Vulnerability Database)
Vulnerability 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.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
Source: NVD (National Vulnerability Database)
Vulnerability Type
授权机制缺失
Source: NVD (National Vulnerability Database)
Vulnerability Title
Weblate 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Weblate是Weblate开源的一个 Copyleft 的基于 web 的自由软件持续本地化系统。 Weblate 5.16.1之前版本存在安全漏洞，该漏洞源于REST API的AddonViewSet未按用户权限限定结果范围，可能导致任何经过身份验证的用户列出和检索所有项目及组件的所有插件。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| WeblateOrg | weblate | < 5.16.1 | - |
II. Public POCs for CVE-2026-27457
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|---|
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IV. Related Vulnerabilities
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V. Comments for CVE-2026-27457
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