{"id":"CVE-2020-5402","aliases":["EUVD-2020-26581","GHSA-5fqw-8f7q-58m9"],"status":"published","title":"UAA fails to check the state parameter when authenticating with external IDPs","description":"In Cloud Foundry UAA, versions prior to 74.14.0, a CSRF vulnerability exists due to the OAuth2 state parameter not being checked in the callback function when authenticating with external identity providers.","severity":{"version":"3.0","score":8.8,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-09","score":0.00486,"percentile":0.42172,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-352"],"published":"2020-02-27T19:30:24Z","modified":"2026-10-24T10:30:49Z","products":[{"vendor":"cloud foundry","product":"uaa"},{"vendor":"cloudfoundry","product":"cf-deployment"},{"vendor":"cloudfoundry","product":"user_account_and_authentication"},{"vendor":"cloudfoundry foundation","product":"uaa"}],"references":[{"url":"https://www.cloudfoundry.org/blog/cve-2020-5402","tags":["x_refsource_CONFIRM","x_transferred","Vendor Advisory","advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2020-5402"},{"url":"https://github.com/advisories/GHSA-5fqw-8f7q-58m9"}],"sources":{"cve":[{"id":"CVE-2020-5402","title":"UAA fails to check the state parameter when authenticating with external IDPs","description":"In Cloud Foundry UAA, versions prior to 74.14.0, a CSRF vulnerability exists due to the OAuth2 state parameter not being checked in the callback function when authenticating with external identity providers.","status":"published","published":"2020-02-27T19:30:24.167Z","modified":"2024-09-16T17:03:33.297Z","cvss":[{"version":"3.0","score":8.8,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","level":"high","assessor":"cna"}],"cwes":["CWE-352"],"updated_at":"2026-11-02T14:35:47.877975Z"}],"euvd":[{"id":"EUVD-2020-26581","description":"In Cloud Foundry UAA, versions prior to 74.14.0, a CSRF vulnerability exists due to the OAuth2 state parameter not being checked in the callback function when authenticating with external identity providers.","status":"published","published":"2020-02-27T19:30:24Z","modified":"2024-09-16T17:03:33Z","cvss":[{"version":"3.0","score":8.8,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","level":"high"}],"updated_at":"2026-11-03T00:55:45.787721Z"}],"ghsa":[{"id":"GHSA-5fqw-8f7q-58m9","title":"In Cloud Foundry UAA, versions prior to 74.14.0, a CSRF vulnerability exists due to the OAuth2...","description":"In Cloud Foundry UAA, versions prior to 74.14.0, a CSRF vulnerability exists due to the OAuth2 state parameter not being checked in the callback function when authenticating with external identity providers.","status":"published","published":"2022-05-24T17:09:51Z","modified":"2023-01-29T05:01:31Z","updated_at":"2026-11-02T14:44:50.787695Z"}],"nvd":[{"id":"CVE-2020-5402","description":"In Cloud Foundry UAA, versions prior to 74.14.0, a CSRF vulnerability exists due to the OAuth2 state parameter not being checked in the callback function when authenticating with external identity providers.","status":"published","published":"2020-02-27T20:15:11.577Z","modified":"2026-06-17T03:21:25.663Z","cvss":[{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","level":"high","assessor":"primary"},{"version":"3.0","score":8.8,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","level":"high","assessor":"secondary"},{"version":"2.0","score":6.8,"vector":"AV:N/AC:M/Au:N/C:P/I:P/A:P","level":"medium","assessor":"primary"}],"cwes":["CWE-352"],"updated_at":"2026-11-02T14:05:54.796125Z"}],"osv":[{"id":"CVE-2020-5402","description":"In Cloud Foundry UAA, versions prior to 74.14.0, a CSRF vulnerability exists due to the OAuth2 state parameter not being checked in the callback function when authenticating with external identity providers.","status":"published","published":"2020-02-27T20:15:11.577Z","modified":"2026-10-24T10:30:49.049526233Z","cvss":[{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","level":"high"}],"updated_at":"2026-11-02T15:44:16.936975Z"}]}}