CVE-2026-33676
Vikunja has Cross-Project Information Disclosure via Task Relations — Missing Authorization Check on Related Task Read
CVSS Score
6.5
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-863 |
| Vendor | go-vikunja |
| Product | vikunja |
| Published | Mar 24, 2026 |
| Last Updated | Mar 24, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
None
Availability
None
Affected Versions
go-vikunja / vikunja
< 2.2.1
References
github.com: https://github.com/go-vikunja/vikunja/security/advisories/GHSA-8cmm-j6c4-rr8v github.com: https://github.com/go-vikunja/vikunja/pull/2449 github.com: https://github.com/go-vikunja/vikunja/commit/833f2aec006ac0f6643c41872e45dd79220b9174 vikunja.io: https://vikunja.io/changelog/vikunja-v2.2.2-was-released