{"id":"EUVD-2026-78655","revision":"9981d260eb3f4c92846c071e760d9033","records":[{"revision":"9981d260eb3f4c92846c071e760d9033","observedAt":"2026-11-01T13:04:04.044+00:00","statement":{"source":"euvd","id":"EUVD-2026-78655","aliases":["CVE-2026-91984","GHSA-ccgq-fx7h-2v4c","GHSA-w39f-h553-h2mx"],"title":"Vikunja 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 P…","description":"Vikunja 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.","state":0,"publishedAt":null,"modifiedAt":null,"affected":[],"metrics":[{"system":"EUVD CVSS 4.0","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N","score":5.3,"severity":null}],"references":["https://github.com/go-vikunja/vikunja/security/advisories/GHSA-w39f-h553-h2mx","https://www.vulncheck.com/advisories/vikunja-before-2.6.0-broken-object-level-authorization-via-task-position"],"sourceUrl":"https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-78655","license":"ENISA EUVD · source terms and attribution apply","enrichment":{"sourceStatus":null,"weaknesses":[],"productCriteria":[],"sourceDates":{"datePublished":"Sep 15, 2026, 3:18:27 PM","dateUpdated":"Sep 17, 2026, 7:27:58 PM"},"relatedAdvisories":[],"note":"EUVD source date text has no stated timezone and is retained without inventing a UTC instant. Related bulletin membership is not an alias, common cause or applicability claim. A missing vector with a zero score is treated as unrated. Complete vendor/product and underlying source evidence remains in the original JSON."},"key":"euvd:EUVD-2026-78655","identifiers":["EUVD-2026-78655","CVE-2026-91984","GHSA-ccgq-fx7h-2v4c","GHSA-w39f-h553-h2mx"]},"retained":false,"historicalAffected":[]}],"coverage":[]}