{"id":"EUVD-2026-21417","revision":"f1387027a5f34d9f870dc6821bab13a3","records":[{"revision":"f1387027a5f34d9f870dc6821bab13a3","observedAt":"2026-10-28T04:56:14.31+00:00","statement":{"source":"euvd","id":"EUVD-2026-21417","aliases":["CVE-2026-35594","GHSA-96q5-xm3p-7m84"],"title":"Vikunja is an open-source self-hosted task management platform. Prior to 2.3.0, Vikunja's link share authentication (GetLinkShareFromClaims in pkg/models/link_sharing.go) constructs authorization objects entirely from JWT claims without any…","description":"Vikunja is an open-source self-hosted task management platform. Prior to 2.3.0, Vikunja's link share authentication (GetLinkShareFromClaims in pkg/models/link_sharing.go) constructs authorization objects entirely from JWT claims without any server-side database validation. When a project owner deletes a link share or downgrades its permissions, all previously issued JWTs continue to grant the original permission level for up to 72 hours (the default service.jwtttl). This vulnerability is fixed in 2.3.0.","state":0,"publishedAt":null,"modifiedAt":null,"affected":[],"metrics":[{"system":"EUVD CVSS 3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N","score":6.5,"severity":null}],"references":["https://github.com/go-vikunja/vikunja/security/advisories/GHSA-96q5-xm3p-7m84","https://github.com/go-vikunja/vikunja/pull/2581","https://github.com/go-vikunja/vikunja/commit/379d8a5c19334ffe4846003f590e202c31a75479","https://github.com/go-vikunja/vikunja/releases/tag/v2.3.0"],"sourceUrl":"https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-21417","license":"ENISA EUVD · source terms and attribution apply","enrichment":{"sourceStatus":null,"weaknesses":[],"productCriteria":[],"sourceDates":{"datePublished":"Apr 10, 2026, 3:55:04 PM","dateUpdated":"Apr 14, 2026, 2:32:15 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-2026-21417","identifiers":["EUVD-2026-21417","CVE-2026-35594","GHSA-96q5-xm3p-7m84"]},"retained":false,"historicalAffected":[]}],"coverage":[]}