CVE-2026-33676 | THREATINT

Description

Vikunja is an open-source self-hosted task management platform. Prior to version 2.2.1, when the Vikunja API returns tasks, it populates the `related_tasks` field with full task objects for all related tasks without checking whether the requesting user has read permission on those tasks' projects. An authenticated user who can read a task that has cross-project relations will receive full details (title, description, due dates, priority, percent completion, project ID, etc.) of tasks in projects they have no access to. Version 2.2.1 patches the issue.

PUBLISHED Reserved 2026-03-23 | Published 2026-03-24 | Updated 2026-03-24 | Assigner GitHub_M

MEDIUM: 6.5CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

Problem types

CWE-863: Incorrect Authorization

Product status

< 2.2.1

affected

References

github.com/...ikunja/security/advisories/GHSA-8cmm-j6c4-rr8v exploit

github.com/...ikunja/security/advisories/GHSA-8cmm-j6c4-rr8v

github.com/go-vikunja/vikunja/pull/2449

github.com/...ommit/833f2aec006ac0f6643c41872e45dd79220b9174

vikunja.io/changelog/vikunja-v2.2.2-was-released

cve.org (CVE-2026-33676)

nvd.nist.gov (CVE-2026-33676)

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