CVE-2026-68581

Vikunja versions 0.22.0–2.3.0 are affected by an authentication bypass in API token management caused by principal-id collision: user IDs and link-share IDs share a numeric space via a generic web.Auth.GetID() interface, enabling a link-share JWT with a numeric ID equal to a target user ID to be ...

CVE-2026-68581 Vikunja 0.22.0 through 2.3.0 Authentication Bypass via Principal ID Collision

Vikunja versions 0.22.0 through 2.3.0 fail to validate the principal type in API token management. Because user IDs and link-share IDs are independent numeric sequences and both resolve through a generic web.Auth.GetID interface, a link-share JWT whose numeric ID equals a target user's ID is...