Detections
Analytics
CVE-2026-35594
medium
Description
Vikunja is an open-source self-hosted task management platform. Prior to 2.3.0, Vikunja's link share authentication (GetLinkShareFromClaims in pkg/models/link_sharing.go) constructs authorization objects entirely from JWT claims without any server-side database validation. When a project owner deletes a link share or downgrades its permissions, all previously issued JWTs continue to grant the original permission level for up to 72 hours (the default service.jwtttl). This vulnerability is fixed in 2.3.0.
References
https://github.com/go-vikunja/vikunja/security/advisories/GHSA-96q5-xm3p-7m84
https://github.com/go-vikunja/vikunja/releases/tag/v2.3.0
https://github.com/go-vikunja/vikunja/pull/2581
https://github.com/go-vikunja/vikunja/commit/379d8a5c19334ffe4846003f590e202c31a75479