{"schemaVersion":3,"id":"CVE-2026-73535","aliases":[],"status":"published","duplicateOf":null,"title":null,"description":"Gitea's OpenID connect handler accepts a user's password without enforcing enrolled TOTP or WebAuthn verification before completing sign-in and linking an OpenID identifier. When OpenID sign-in is enabled, an attacker who knows the victim's password can obtain a session and link an attacker-controlled identifier. The attacker can then sign in through that identifier without the victim's password or second factor, and a password change does not remove the link.","dates":{"published":"2026-10-14T14:37:39.073Z","modified":"2026-10-18T13:32:08.609Z","reserved":null,"kevAdded":[],"kevDue":[]},"cvss":{"headline":{"score":8.8,"severity":"high","version":"3.1","versionLabel":"v3.1","source":"CVE.org","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","computed":false,"selection":"backend-summary"},"metrics":[{"version":"3.1","versionLabel":"v3.1","source":"CVE.org","score":8.8,"severity":"high","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","exploitability":null,"impact":null,"computed":false},{"version":"3.1","versionLabel":"v3.1","source":"NVD","score":8.8,"severity":"high","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","exploitability":null,"impact":null,"computed":false}]},"epss":{"probability":0.00447,"percentile":0.37841,"severity":"low","asOf":"2026-10-22T00:00:00.000Z","change":{"pp":null,"baselineDate":null,"baselineScore":null},"history":[{"date":"2026-10-15T00:00:00.000Z","score":0.002,"percentile":null},{"date":"2026-10-16T00:00:00.000Z","score":0.002,"percentile":null},{"date":"2026-10-17T00:00:00.000Z","score":0.002,"percentile":null},{"date":"2026-10-18T00:00:00.000Z","score":0.002,"percentile":null},{"date":"2026-10-19T00:00:00.000Z","score":0.00447,"percentile":null},{"date":"2026-10-20T00:00:00.000Z","score":0.00447,"percentile":null},{"date":"2026-10-21T00:00:00.000Z","score":0.00447,"percentile":null},{"date":"2026-10-22T00:00:00.000Z","score":0.00447,"percentile":0.37841}],"last30":[{"date":"2026-10-15T00:00:00.000Z","score":0.002,"percentile":null},{"date":"2026-10-16T00:00:00.000Z","score":0.002,"percentile":null},{"date":"2026-10-17T00:00:00.000Z","score":0.002,"percentile":null},{"date":"2026-10-18T00:00:00.000Z","score":0.002,"percentile":null},{"date":"2026-10-19T00:00:00.000Z","score":0.00447,"percentile":null},{"date":"2026-10-20T00:00:00.000Z","score":0.00447,"percentile":null},{"date":"2026-10-21T00:00:00.000Z","score":0.00447,"percentile":null},{"date":"2026-10-22T00:00:00.000Z","score":0.00447,"percentile":0.37841}]},"kev":{"state":"not-listed","entries":[],"listedCount":0,"totalCatalogs":3,"catalogs":[{"source":"cisa","label":"CISA","listed":false,"entry":null},{"source":"enisa","label":"ENISA","listed":false,"entry":null},{"source":"circl","label":"CIRCL","listed":false,"entry":null}]},"ransomware":{"state":"none-recorded","sources":[]},"exploits":[],"exploitCount":0,"weaknesses":[{"id":"CWE-304","name":"Missing Critical Step in Authentication","description":"The product implements an authentication technique, but it skips a step that weakens the technique.","type":"weakness","status":"Draft","abstraction":"Base","likelihoodOfExploit":null,"url":"https://cwe.mitre.org/data/definitions/304.html"},{"id":"CWE-696","name":"Incorrect Behavior Order","description":"The product performs multiple related behaviors, but the behaviors are performed in the wrong order in ways that may produce resultant weaknesses.","type":"weakness","status":"Incomplete","abstraction":"Class","likelihoodOfExploit":null,"url":"https://cwe.mitre.org/data/definitions/696.html"}],"affected":[{"vendor":"gitea","product":"gitea","name":"Gitea","label":"gitea","ecosystem":null,"cpePart":"a","purl":null,"purlType":null,"versions":[{"text":"≤ 1.27.1","noFixRecorded":false,"fixedIn":null}],"versionsText":"≤ 1.27.1","eol":null,"hubHref":"/vendor/gitea/gitea"}],"affectedCount":1,"eol":{"hasEol":false,"count":0},"references":[{"url":"https://github.com/go-gitea/gitea/security/advisories/GHSA-8xjr-x7rg-hp5h","label":"github.com/go-gitea/gitea/security/advisories/GHSA-8xjr-x7rg-hp5h","hostname":"github.com","tags":["Vendor Advisory"]},{"url":"https://blog.gitea.com/release-of-1.27.2/","label":"blog.gitea.com/release-of-1.27.2/","hostname":"blog.gitea.com","tags":["Release Notes"]},{"url":"https://github.com/go-gitea/gitea/pull/38805","label":"github.com/go-gitea/gitea/pull/38805","hostname":"github.com","tags":["Patch"]},{"url":"https://github.com/go-gitea/gitea/pull/38810","label":"github.com/go-gitea/gitea/pull/38810","hostname":"github.com","tags":["Patch"]},{"url":"https://github.com/go-gitea/gitea/releases/tag/v1.27.2","label":"github.com/go-gitea/gitea/releases/tag/v1.27.2","hostname":"github.com","tags":["Release Notes"]}],"lineage":{"upstream":[],"downstream":[],"duplicates":[],"related":[]},"timeline":[{"kind":"published","date":"2026-10-14T14:37:39.073Z","label":"Published","detail":"Vulnerability first disclosed.","source":null},{"kind":"modified","date":"2026-10-18T13:32:08.609Z","label":"Last modified","detail":"Vulnerability information updated.","source":null}],"risk":{"score":35,"level":"medium","profile":"Default","thresholds":{"critical":75,"high":50,"medium":25,"low":10}},"meta":{"dataAsOf":"2026-10-22T15:44:34.453Z","stale":false,"partial":false}}