Security Advisory

CVE-2026-35594

CVE vulnerability detail — eXtreme Datacenter Security Operations

Published 2026-04-10 15:55:04

Last updated 2026-04-14 14:32:15

Assigner GitHub_M

State PUBLISHED

Description

Vikunja is an open-source self-hosted task management platform. Prior to 2.3.0, Vikunjas 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.

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