PT-2026-22201 · Weblate · Weblate

Lighthousekeeper1212 · Published 2026-02-26 · Updated 2026-03-09 · CVE-2026-27457

Positive Technologies (AI Summary)

CVSS v3.1

4.3

Medium

Base vector

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

Name of the Vulnerable Software and Affected Versions Weblate versions prior to 5.16.1

Description Weblate’s REST API AddonViewSet in weblate/api/views.py (line 2831) did not properly restrict access to addon information based on user permissions. Specifically, the queryset = Addon.objects.all() assignment within the viewset allowed any authenticated user, or even anonymous users if REQUIRE LOGIN was not enabled, to list all addons across all projects and components using the GET /api/addons/ and GET /api/addons/{id}/ API endpoints. This allowed unauthorized access to addon configurations.

Recommendations Update to Weblate version 5.16.1 or later.

Exploit

Fix

Missing Authorization

Information Disclosure

Weakness Enumeration

CWE-862

CWE-200

Related Identifiers

CVE-2026-27457

GHSA-WPPC-7CQ7-CGFV

OPENSUSE-SU-2026:10309-1

Affected Products

Weblate

References · 19

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/27xxx/CVE-2026-27457.json · Exploit
• https://github.com/WeblateOrg/weblate/commit/7802c9b121eb407c48d4adddd4f2458fb3efef0f · Patch
• https://github.com/WeblateOrg/weblate/commit/3f58f9a4152bc0cbdd6eff5954f9c7bc4d9f0af9 · Patch
• https://github.com/WeblateOrg/weblate/pull/18164 · Patch
• https://github.com/WeblateOrg/weblate/pull/18107 · Patch
• https://github.com/WeblateOrg/weblate/security/advisories/GHSA-wppc-7cq7-cgfv · Vendor Advisory
• https://osv.dev/vulnerability/openSUSE-SU-2026:10309-1 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-27457 · Security Note
• https://osv.dev/vulnerability/GHSA-wppc-7cq7-cgfv · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2026-27457 · Vendor Advisory
• https://github.com/WeblateOrg/weblate · Note
• https://github.com/WeblateOrg/weblate/releases/tag/weblate-5.16.1 · Note
• https://twitter.com/VulmonFeeds/status/2027239210134929535 · Twitter Post
• https://reddit.com/r/VulnMatter/comments/1rfmr6l/resumen_diario_de_vulnerabilidades_26022026 · Reddit Post
• https://twitter.com/_cvereports/status/2027144221623214191 · Twitter Post