{"id":"GHSA-ccgq-fx7h-2v4c","title":"Duplicate Advisory: Vikunja: Cross-tenant task-position rows can be injected into arbitrary project views via the unvalidated project_view_id in the task position endpoint (v1 and v2)","summary":"Duplicate Advisory: Vikunja: Cross-tenant task-position rows can be injected into arbitrary project views via the unvalidated project_view_id in the task position endpoint (v1 and v2)","severity":"medium","cvss":4.3,"cwe":["CWE-639"],"vendor":"api","product":"code.vikunja.io/api","ecosystem":"go","affected":["code.vikunja.io/api <= 2.5.0"],"published":"2026-09-15","updated":"2026-10-09","sourceUpdated":"2026-10-09T20:51:35Z","source":"GHSA","sourceUrl":"https://github.com/advisories/GHSA-ccgq-fx7h-2v4c","references":[{"url":"https://github.com/go-vikunja/vikunja/security/advisories/GHSA-w39f-h553-h2mx"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-91984"},{"url":"https://www.vulncheck.com/advisories/vikunja-before-2.6.0-broken-object-level-authorization-via-task-position"},{"url":"https://github.com/advisories/GHSA-ccgq-fx7h-2v4c"}],"tags":["ghsa","go"],"ingestedAt":"2026-10-09T21:12:42.331Z","slug":"GHSA-ccgq-fx7h-2v4c","body":"## Overview\n\n### Duplicate Advisory\nThis advisory has been withdrawn because it is a duplicate of GHSA-w39f-h553-h2mx. This link is maintained to preserve external references.\n\n### Original Description\nVikunja before 2.6.0 fails to validate that user-supplied project_view_id in task-position requests belongs to the task's project. Authenticated attackers can insert task position rows into arbitrary other tenant project views via POST or PUT task-position endpoints.\n\n## Affected packages\n\n- `code.vikunja.io/api <= 2.5.0`\n\n## Remediation\n\nRefer to the advisory for the patched release.","depth":"sunlit","depthScore":24,"depthScoreParts":{"impact":23.7,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}