CVE-2026-56765 Vikunja - Unauthenticated Instance-Wide Data Breach via Link Share Hash Disclosure Chained with Cross-Project Attachment IDOR

Vikunja before 2.2.1 contains an authorization flaw where the LinkSharing.ReadAll endpoint exposes share hashes to users with read access, enabling permission escalation to admin-level shares. The GetTaskAttachment endpoint performs permission checks against user-supplied task IDs but fetches...

EUVD-2026-14925

Vikjuna: Link Share Hash Disclosure via ReadAll Endpoint Enables Permission Escalation...

CVE-2026-33680

Vikunja before version 2.2.2 is affected: the LinkSharing.ReadAll() API lets link-share users list all shares for a project, exposing secret hashes. Although LinkSharing.CanRead() blocks reading individual shares via ReadOne, the ReadAllWeb handler bypasses this check by never calling CanRead(), ...