Medium severity · published Mar 24, 2026
CVE-2026-33676
Vikunja has Cross-Project Information Disclosure via Task Relations — Missing Authorization Check on Related Task Read
6.5
CVSS
0.4%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
High
Integrity
None
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.4% · higher than 30% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
VI
vikunja · go-vikunja
< 2.2.1 · source: vendor, NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-33676
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-33676
Patch
https://github.com/go-vikunja/vikunja/commit/833f2aec006ac0f6643c41872e45dd79220b9174
Issue Tracking
https://github.com/go-vikunja/vikunja/pull/2449
Exploit
https://github.com/go-vikunja/vikunja/security/advisories/GHSA-8cmm-j6c4-rr8v
Release Notes
https://vikunja.io/changelog/vikunja-v2.2.2-was-released
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