{"action":"Upgrade code.vikunja.io/api to 2.6.0 or later.","affected":[{"fixed":"2.6.0","introduced":"0"}],"component":"code.vikunja.io/api","cve_ids":["CVE-2026-91985"],"ecosystem":"Go","exploited":false,"fixed_versions":["2.6.0"],"ghsa_id":"GHSA-qfwc-vx6f-3g6g","id":"tcs_01M5JJNB34PSCQ3PVHQSTYM7X9","modified_at":"2026-10-19T21:40:54.885980828Z","published_at":"2026-10-09T20:51:29Z","references":["https://osv.dev/vulnerability/GHSA-qfwc-vx6f-3g6g","https://github.com/go-vikunja/vikunja/security/advisories/GHSA-qfwc-vx6f-3g6g","https://nvd.nist.gov/vuln/detail/CVE-2026-91985","https://github.com/go-vikunja/vikunja/pull/3688","https://github.com/go-vikunja/vikunja/commit/077dc4de79ce6f1ab59215a2c7bf9b30423685f2","https://github.com/go-vikunja/vikunja","https://github.com/go-vikunja/vikunja/releases/tag/v2.6.0","https://www.vulncheck.com/advisories/vikunja-before-2.6.0-privilege-escalation-via-link-share-hash"],"severity":{"label":"high","score":7.5},"sources":[{"source":"osv","source_id":"GHSA-qfwc-vx6f-3g6g","url":"https://osv.dev/vulnerability/GHSA-qfwc-vx6f-3g6g"},{"source":"nvd","source_id":"CVE-2026-91985","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-91985"}],"summary":"Vikunja: Read-only project members can obtain any link share's access hash via the single-share read endpoint (v1 and v2) and escalate to the share's permission level"}