{"id":"CVE-2026-101023","aliases":["BIT-gitea-2026-101023","EUVD-2026-94061","GHSA-469m-x4mw-38r3"],"status":"published","title":"Gitea OAuth2 refresh token grant accepts access tokens","description":"Gitea's OAuth2 token endpoint verified the signature and grant of a token submitted with the `refresh_token` grant type, but not that the token was a refresh token. An unexpired access token for the same OAuth2 application and grant could be exchanged for a new access token and refresh token. Whoever holds such an access token could keep access beyond the token's original lifetime.","severity":{"version":"3.1","score":9.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N","level":"critical","assessor":"adp","from":"cve"},"epss":{"day":"2026-11-09","score":0.00353,"percentile":0.29233,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-287"],"published":"2026-10-06T21:34:53Z","modified":"2026-10-28T02:30:57Z","fixes":[{"ecosystem":"Bitnami","package":"gitea","fixed_in":["28.1.0"],"sources":["osv"]}],"affected":[{"source":"osv","ecosystem":"Bitnami","package":"gitea","ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"28.1.0"}]}]}],"products":[{"vendor":"gitea","product":"gitea"}],"references":[{"url":"https://github.com/go-gitea/gitea/security/advisories/GHSA-469m-x4mw-38r3","tags":["vendor-advisory","Vendor Advisory","advisory"]},{"url":"https://github.com/go-gitea/gitea/pull/39501","tags":["patch","Patch","fix"]},{"url":"https://github.com/go-gitea/gitea/pull/39507","tags":["patch","Patch","fix"]},{"url":"https://blog.gitea.com/release-of-28.1.0/","tags":["release-notes","Release Notes","article","advisory"]},{"url":"https://github.com/go-gitea/gitea/releases/tag/v28.1.0","tags":["release-notes","Release Notes","article","advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-101023","tags":["web","advisory"]},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/101xxx/CVE-2026-101023.json","tags":["advisory"]}],"sources":{"cve":[{"id":"CVE-2026-101023","title":"Gitea OAuth2 refresh token grant accepts access tokens","description":"Gitea's OAuth2 token endpoint verified the signature and grant of a token submitted with the `refresh_token` grant type, but not that the token was a refresh token. An unexpired access token for the same OAuth2 application and grant could be exchanged for a new access token and refresh token. Whoever holds such an access token could keep access beyond the token's original lifetime.","status":"published","published":"2026-10-06T21:34:53.642Z","modified":"2026-10-07T20:04:04.946Z","cvss":[{"version":"3.1","score":9.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N","level":"critical","assessor":"adp"}],"cwes":["CWE-287"],"updated_at":"2026-11-02T14:20:09.808851Z"}],"euvd":[{"id":"EUVD-2026-94061","description":"Gitea's OAuth2 token endpoint verified the signature and grant of a token submitted with the `refresh_token` grant type, but not that the token was a refresh token. An unexpired access token for the same OAuth2 application and grant could be exchanged for a new access token and refresh token. Whoever holds such an access token could keep access beyond the token's original lifetime.","status":"published","published":"2026-10-06T21:34:53Z","modified":"2026-10-07T20:04:04Z","cvss":[{"version":"3.1","score":9.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N","level":"critical"}],"updated_at":"2026-11-02T17:27:33.904651Z"}],"nvd":[{"id":"CVE-2026-101023","description":"Gitea's OAuth2 token endpoint verified the signature and grant of a token submitted with the `refresh_token` grant type, but not that the token was a refresh token. An unexpired access token for the same OAuth2 application and grant could be exchanged for a new access token and refresh token. Whoever holds such an access token could keep access beyond the token's original lifetime.","status":"published","published":"2026-10-06T22:16:59.737Z","modified":"2026-10-13T14:39:07.98Z","cvss":[{"version":"3.1","score":9.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N","level":"critical","assessor":"secondary"}],"cwes":["CWE-287"],"updated_at":"2026-11-02T14:12:54.809359Z"}],"osv":[{"id":"CVE-2026-101023","title":"Gitea OAuth2 refresh token grant accepts access tokens","description":"Gitea's OAuth2 token endpoint verified the signature and grant of a token submitted with the `refresh_token` grant type, but not that the token was a refresh token. An unexpired access token for the same OAuth2 application and grant could be exchanged for a new access token and refresh token. Whoever holds such an access token could keep access beyond the token's original lifetime.","status":"published","published":"2026-10-06T21:34:53.642Z","modified":"2026-10-28T02:30:57.938722031Z","cvss":[{"version":"3.1","score":9.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N","level":"critical"}],"updated_at":"2026-11-02T15:44:53.83521Z"},{"id":"BIT-gitea-2026-101023","title":"Gitea OAuth2 refresh token grant accepts access tokens","description":"Gitea's OAuth2 token endpoint verified the signature and grant of a token submitted with the `refresh_token` grant type, but not that the token was a refresh token. An unexpired access token for the same OAuth2 application and grant could be exchanged for a new access token and refresh token. Whoever holds such an access token could keep access beyond the token's original lifetime.","status":"published","published":"2026-10-14T08:42:36.604Z","modified":"2026-10-14T11:11:10.73082682Z","updated_at":"2026-11-02T15:28:29.999658Z"}]}}