{"id":"CVE-2026-82183","aliases":["EUVD-2026-69861","GHSA-f9w9-q3c6-p58g"],"status":"published","title":"OAuth Single Sign On 6.25.0 - 7.0.0 - Unauthenticated Account Takeover via Unverified Steam OpenID Assertion","description":"The OAuth Single Sign On  WordPress plugin before 7.0.1 does not verify the identity assertion returned by its Steam single sign-on flow, allowing unauthenticated attackers to log in as an arbitrary non-administrator user, and to create new accounts.","severity":{"version":"3.1","score":8.1,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"adp","from":"cve"},"epss":{"day":"2026-11-11","score":0.00383,"percentile":0.32844,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-287"],"published":"2026-09-02T06:00:24Z","modified":"2026-09-03T17:50:37Z","products":[{"vendor":"unknown","product":"oauth single sign on"}],"references":[{"url":"https://wpscan.com/vulnerability/bc7c18f2-4e8c-47a3-a972-6162fd27aaca/","tags":["exploit","vdb-entry","technical-description"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-82183"},{"url":"https://wpscan.com/vulnerability/bc7c18f2-4e8c-47a3-a972-6162fd27aaca"},{"url":"https://github.com/advisories/GHSA-f9w9-q3c6-p58g"}],"sources":{"cve":[{"id":"CVE-2026-82183","title":"OAuth Single Sign On 6.25.0 - 7.0.0 - Unauthenticated Account Takeover via Unverified Steam OpenID Assertion","description":"The OAuth Single Sign On  WordPress plugin before 7.0.1 does not verify the identity assertion returned by its Steam single sign-on flow, allowing unauthenticated attackers to log in as an arbitrary non-administrator user, and to create new accounts.","status":"published","published":"2026-09-02T06:00:24.102Z","modified":"2026-09-02T12:26:36.799Z","cvss":[{"version":"3.1","score":8.1,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"adp"}],"cwes":["CWE-287"],"updated_at":"2026-11-02T13:40:35.004553Z"}],"euvd":[{"id":"EUVD-2026-69861","description":"The OAuth Single Sign On  WordPress plugin before 7.0.1 does not verify the identity assertion returned by its Steam single sign-on flow, allowing unauthenticated attackers to log in as an arbitrary non-administrator user, and to create new accounts.","status":"published","published":"2026-09-02T06:00:24Z","modified":"2026-09-02T12:26:36Z","cvss":[{"version":"3.1","score":8.1,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"high"}],"updated_at":"2026-11-02T18:01:16.020579Z"}],"ghsa":[{"id":"GHSA-f9w9-q3c6-p58g","title":"The OAuth Single Sign On  WordPress plugin before 7.0.1 does not verify the identity assertion...","description":"The OAuth Single Sign On  WordPress plugin before 7.0.1 does not verify the identity assertion returned by its Steam single sign-on flow, allowing unauthenticated attackers to log in as an arbitrary non-administrator user, and to create new accounts.","status":"published","published":"2026-09-02T06:31:16Z","modified":"2026-09-02T12:32:35Z","cvss":[{"version":"3.1","score":8.1,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"high"}],"cwes":["CWE-287"],"updated_at":"2026-11-02T15:11:16.730606Z"}],"nvd":[{"id":"CVE-2026-82183","description":"The OAuth Single Sign On  WordPress plugin before 7.0.1 does not verify the identity assertion returned by its Steam single sign-on flow, allowing unauthenticated attackers to log in as an arbitrary non-administrator user, and to create new accounts.","status":"published","published":"2026-09-02T06:17:19.987Z","modified":"2026-09-03T17:50:37.69Z","cvss":[{"version":"3.1","score":8.1,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"secondary"}],"cwes":["CWE-287"],"updated_at":"2026-11-02T14:12:43.399612Z"}]}}