{"id":"CVE-2026-104627","url":"https://www.cyber-defence.io/tools/cve/CVE-2026-104627","generatedAt":"2026-10-28T02:24:07.814Z","title":"Because OpenID 2.0 allows unsolicited assertions, an attacker-controlled OpenID provider could attach the attacker's identity to the account of a signed-in victim who opened a crafted link, and the attacker could then sign in as the victim through…","description":"The Gitea OpenID association callback in the security settings accepted a positive OpenID 2.0 assertion without checking that the signed-in user had started the linking. Because OpenID 2.0 allows unsolicited assertions, an attacker-controlled OpenID provider could attach the attacker's identity to the account of a signed-in victim who opened a crafted link, and the attacker could then sign in as the victim through OpenID login, which does not apply the local TOTP or WebAuthn checks. The callback now requires a time-limited `state` value bound to the user.","published":"2026-10-18T19:16:32.000Z","lastModified":"2026-10-19T21:17:03.000Z","status":"Awaiting Analysis","sourceIdentifier":"88ee5874-cf24-4952-aea0-31affedb7ff2","cvss":{"version":"3.1","score":5.4,"severity":"MEDIUM","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N"},"cwe":["CWE-287","CWE-352"],"affected":[],"epss":{"score":0.00119,"percentile":0.01755,"date":"2026-10-26","history":[{"date":"2026-10-19","score":0.00109,"percentile":0.01138}]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"low","text":"Lower severity and a low EPSS score (0.12%). Track it; it rarely justifies an emergency change on its own."},"changes":[{"kind":"scored","label":"Newly scored","at":"2026-10-19T23:15:31.000Z","detail":{"from":null,"score":"5.4","severity":"MEDIUM","fromSeverity":null},"summary":"Now scored CVSS 5.4 MEDIUM."},{"kind":"new","label":"New CVE","at":"2026-10-18T19:16:32.000Z","detail":{"score":null,"severity":null,"publishedAt":"2026-10-18T19:16:32.463Z"},"summary":"New CVE, medium severity (CVSS 5.4)."}],"references":[{"url":"https://blog.gitea.com/release-of-28.2.0/","source":"88ee5874-cf24-4952-aea0-31affedb7ff2"},{"url":"https://github.com/go-gitea/gitea/pull/39642","source":"88ee5874-cf24-4952-aea0-31affedb7ff2"},{"url":"https://github.com/go-gitea/gitea/pull/39744","source":"88ee5874-cf24-4952-aea0-31affedb7ff2"},{"url":"https://github.com/go-gitea/gitea/releases/tag/v28.2.0","source":"88ee5874-cf24-4952-aea0-31affedb7ff2"},{"url":"https://github.com/go-gitea/gitea/security/advisories/GHSA-mf69-7pqq-86vx","source":"88ee5874-cf24-4952-aea0-31affedb7ff2"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-104627","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}