What is the CVSS score of CVE-2026-27457?

CVE-2026-27457 has a CVSS 3.1 base score of 4.3 (Medium). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N. EPSS exploitation probability: 0.0%.

Which versions of Weblate are affected by CVE-2026-27457?

Organizations using Weblate should be aware of moderate risk from CVE-2026-27457, a information exposure vulnerability rated CVSS 4.3. Sensitive information could be exposed to unauthorized parties.. A patch is available.

How to fix or mitigate CVE-2026-27457?

Within 30 days: Identify affected systems and apply vendor patches as part of regular patch cycle. Review data exposure and access controls.

Weblate CVE-2026-27457

MEDIUM

Information Exposure (CWE-200)

2026-02-26 security-advisories@github.com

GHSA-wppc-7cq7-cgfv

Information Disclosure Weblate Suse

4.3

CVSS 3.1 · GitHub Advisory

Severity by source

GitHub Advisory PRIMARY

4.3 MEDIUM

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

SUSE

MEDIUM

qualitative

Primary rating from GitHub Advisory.

CVSS VectorGitHub Advisory

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

Lifecycle Timeline

Analysis Generated

Mar 12, 2026 - 21:56 vuln.today

Patch released

Feb 27, 2026 - 17:05 nvd

Patch available

CVE Published

Feb 26, 2026 - 22:20 nvd

MEDIUM 4.3

DescriptionGitHub Advisory

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.

AnalysisAI

Weblate versions prior to 5.16.1 fail to properly restrict API access to addon data, allowing authenticated users to enumerate and access all addons across every project and component in the system. An attacker with valid credentials can query the REST API endpoints to retrieve sensitive addon information that should be scoped to their assigned permissions. This information disclosure vulnerability is fixed in version 5.16.1.

Technical ContextAI

Classified as CWE-200 (Information Exposure). Affects Weblate. 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.