Medium 5.0Published Aug 28, 2026

CVE-2026-55067Vikunja: Authenticated cross-tenant kanban-bucket relocation via `project_view_id` mass-assignment

Updated under an hour ago (2026-10-19 08:00 UTC)

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Every CVE for go-vikunja vikunja

Exploited in the last 30 days

Vikunja is an open-source self-hosted task management platform. Prior to 2.4.0, POST /api/v1/projects/{project}/views/{view}/buckets/{bucket} allows the request body project_view_id value to be mass assigned by Bucket.Update in pkg/models/kanban.go. The permission check validates that the bucket currently belongs to the URL project and view but does not validate the body selected destination view, allowing any authenticated user to relocate an attacker-owned bucket into another tenant’s Kanban view. The injected bucket retains attacker-controlled content and ownership, enabling cross-tenant defacement. This issue is fixed in version 2.4.0.

CVSS: 5.0 MEDIUM (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:L/A:N
Weakness (CWE): CWE-639
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: GitHub_M
NVD analysis: Deferred
Record last updated: Aug 28, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

go-vikunja vikunja go_vikunja:vikunja (from the name)	before 2.4.0	CNA record

References

https://github.com/go-vikunja/vikunja/security/advisories/GHSA-569v-q83c-3j3gx-refsource-confirm
https://github.com/go-vikunja/vikunja/pull/3239x-refsource-misc
https://github.com/go-vikunja/vikunja/commit/b31d606b8879ebe98fbb2ac5d8b3066b86f59868x-refsource-misc
https://github.com/go-vikunja/vikunja/releases/tag/v2.4.0x-refsource-misc

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.