GHSA-VVCV-VPPH-H844 Vikunja: Link-share principal ID collision allows cross-account API token issuance and management

Executive Summary Vikunja accepts both regular-user JSON Web Tokens JWTs and link-share JWTs through its generic authenticated API route group. A link-share JWT resolves to a models.LinkSharing principal whose GetID method returns the numeric linkshares.id. The API-token management model then...