{"id":"CVE-2026-18056","state":"PUBLISHED","title":"HivePress Authentication <= 1.1.4 - Unauthenticated Authentication Bypass via 'access_token' Parameter to Facebook Authenticator","description":"The HivePress Authentication plugin for WordPress is vulnerable to Authentication Bypass via the access_token parameter in all versions up to, and including, 1.1.4. This is due to the authenticate_user function's Facebook authenticator resolving third-party identity by forwarding the attacker-supplied access_token to the Facebook Graph API and trusting the returned email and ID verbatim, without performing any application ID or audience validation — specifically, no /debug_token verification and no comparison of the token's app_id against the configured hp_facebook_app_id. This makes it possible for unauthenticated attackers to authenticate as any existing WordPress user, including administrators, whose email address is associated with a Facebook account for which the attacker can obtain any valid access token. Important Note: To exploit the vulnerability, the attacker must obtain the victim's access token.","publishedAt":"2026-09-06T02:26:51.649Z","updatedAt":"2026-09-07T11:17:23.315Z","severity":{"score":7.5,"label":"High","version":"3.1","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H","source":"Wordfence"},"assigner":"Wordfence","products":["hivepress HivePress Authentication"],"affected":[{"vendor":"hivepress","product":"HivePress Authentication","defaultStatus":"unaffected","versions":[{"version":"0","status":"affected","lessThanOrEqual":"1.1.4","versionType":"semver"}]}],"references":["https://www.wordfence.com/threat-intel/vulnerabilities/id/c0ba6392-e6f7-479a-8b9b-9cea4b140c71?source=cve","https://developers.facebook.com/docs/facebook-login/guides/advanced/manual-flow/#confirm","https://plugins.trac.wordpress.org/browser/hivepress-authentication/tags/1.1.4/includes/components/class-facebook-authentication.php#L59","https://plugins.trac.wordpress.org/browser/hivepress-authentication/tags/1.1.4/includes/controllers/class-authentication.php#L84","https://github.com/hivepress/hivepress-authentication/commit/f97d9109002905cf57597d15c535d1155dc64657","https://plugins.trac.wordpress.org/changeset/3664231/hivepress-authentication"],"weaknesses":["CWE-287"],"ingestedAt":"2026-10-29T20:11:10.572Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/18xxx/CVE-2026-18056.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-18056","state":"PUBLISHED","datePublished":"2026-09-06T02:26:51.649Z","dateUpdated":"2026-09-07T11:17:23.315Z","assignerShortName":"Wordfence","assignerOrgId":"b15e7b5b-3da4-40ae-a43c-f7aa60e62599","dateReserved":"2026-07-28T13:00:05.931Z"},"containers":{"cna":{"title":"HivePress Authentication <= 1.1.4 - Unauthenticated Authentication Bypass via 'access_token' Parameter to Facebook Authenticator","descriptions":[{"lang":"en","value":"The HivePress Authentication plugin for WordPress is vulnerable to Authentication Bypass via the access_token parameter in all versions up to, and including, 1.1.4. 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Important Note: To exploit the vulnerability, the attacker must obtain the victim's access token."}],"affected":[{"vendor":"hivepress","product":"HivePress Authentication","defaultStatus":"unaffected","versions":[{"version":"0","status":"affected","lessThanOrEqual":"1.1.4","versionType":"semver"}]}],"references":[{"url":"https://www.wordfence.com/threat-intel/vulnerabilities/id/c0ba6392-e6f7-479a-8b9b-9cea4b140c71?source=cve"},{"url":"https://developers.facebook.com/docs/facebook-login/guides/advanced/manual-flow/#confirm"},{"url":"https://plugins.trac.wordpress.org/browser/hivepress-authentication/tags/1.1.4/includes/components/class-facebook-authentication.php#L59"},{"url":"https://plugins.trac.wordpress.org/browser/hivepress-authentication/tags/1.1.4/includes/controllers/class-authentication.php#L84"},{"url":"https://github.com/hivepress/hivepress-authentication/commit/f97d9109002905cf57597d15c535d1155dc64657"},{"url":"https://plugins.trac.wordpress.org/changeset/3664231/hivepress-authentication"}],"metrics":[{"cvssV3_1":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H","baseScore":7.5,"baseSeverity":"HIGH"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-287","lang":"en","description":"CWE-287 Improper Authentication","type":"CWE"}]}],"providerMetadata":{"shortName":"Wordfence","orgId":"b15e7b5b-3da4-40ae-a43c-f7aa60e62599","dateUpdated":"2026-09-06T02:26:51.649Z"},"credits":[{"lang":"en","type":"finder","value":"Mutantgun"}],"timeline":[{"time":"2026-08-14T16:33:22.000Z","lang":"en","value":"Vendor Notified"},{"time":"2026-09-05T14:06:18.000Z","lang":"en","value":"Disclosed"}]},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"id":"CVE-2026-18056","role":"CISA Coordinator","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"total"}],"version":"2.0.3","timestamp":"2026-09-07T11:03:04.808288Z"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-09-07T11:17:23.315Z"}}]}}}