{"id":"EUVD-2026-78654","revision":"e3bd8e9101fc415eb496fbe593adf334","records":[{"revision":"e3bd8e9101fc415eb496fbe593adf334","observedAt":"2026-11-01T13:04:02.905+00:00","statement":{"source":"euvd","id":"EUVD-2026-78654","aliases":["CVE-2026-91983","GHSA-phph-c358-5mwm","GHSA-9rg3-v78m-26q8"],"title":"Vikunja before 2.6.0 contains an API token scope bypass vulnerability in task read endpoints where authorization fails to inspect query string parameters. Attackers with limited token scopes can use the expand parameter to access restricted…","description":"Vikunja before 2.6.0 contains an API token scope bypass vulnerability in task read endpoints where authorization fails to inspect query string parameters. Attackers with limited token scopes can use the expand parameter to access restricted data like comments, reactions, and time entries without proper permission verification.","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:L/VI:N/VA:N/SC:N/SI:N/SA:N","score":5.3,"severity":null}],"references":["https://github.com/go-vikunja/vikunja/security/advisories/GHSA-9rg3-v78m-26q8","https://www.vulncheck.com/advisories/vikunja-before-2.6.0-api-token-scope-bypass-via-expand-parameter"],"sourceUrl":"https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-78654","license":"ENISA EUVD · source terms and attribution apply","enrichment":{"sourceStatus":null,"weaknesses":[],"productCriteria":[],"sourceDates":{"datePublished":"Sep 15, 2026, 3:18:26 PM","dateUpdated":"Sep 15, 2026, 3:52:07 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-2026-78654","identifiers":["EUVD-2026-78654","CVE-2026-91983","GHSA-phph-c358-5mwm","GHSA-9rg3-v78m-26q8"]},"retained":false,"historicalAffected":[]}],"coverage":[]}