CyberRota Analysis
AI-GeneratedVikunja versions prior to 2.2.1 are vulnerable due to an authorization flaw in the LinkSharing.ReadAll endpoint, which exposes share hashes to users with read access, potentially allowing them to escalate permissions to admin-level shares. Additionally, the GetTaskAttachment endpoint lacks proper ownership verification, enabling attackers to download and delete file attachments across all projects. Organizations using Vikunja should prioritize patching to mitigate the risk of unauthorized access and data loss.
Public Exploit Signal
A public exploit, PoC, GitHub repository or Metasploit reference was detected for this CVE.
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Original NVD Description
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.