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CVE Vendors Products Updated CVSS v3.1
CVE-2026-56765 1 Vikunja 1 Vikunja 2026-07-10 9.8 Critical
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 attachments by sequential ID without verifying ownership, allowing attackers to download and delete all file attachments across all projects instance-wide.