CVE-2026-33313 PUBLISHED

Vikunja has an IDOR in Task Comments Allows Reading Arbitrary Comments

Assigner: GitHub_M
Reserved: 18.03.2026 Published: 24.03.2026 Updated: 24.03.2026

Vikunja is an open-source self-hosted task management platform. Prior to version 2.2.0, an authenticated user can read any task comment by ID, regardless of whether they have access to the task the comment belongs to, by substituting the task ID in the API URL with a task they do have access to. Version 2.2.0 fixes the issue.

Metrics

CVSS 4.0

CVSS Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N
CVSS Score: 5.3

Exploitability Metrics		Vulnerable System Impact Metrics		Subsequent System Impact Metrics
Attack Vector	Network	Confidentiality	Low	Confidentiality	None
Attack Complexity	Low	Integrity	None	Integrity	None
Attack Requirements	None	Availability	None	Availability	None
Privileges Required	Low
User Interaction	None

CVSS 4.0

Product Status

Vendor	go-vikunja
Product	vikunja
Versions	Version < 2.2.0 is affected

References

Problem Types

CWE-639: Authorization Bypass Through User-Controlled Key CWE