{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-18056","assignerOrgId":"b15e7b5b-3da4-40ae-a43c-f7aa60e62599","state":"PUBLISHED","assignerShortName":"Wordfence","dateReserved":"2026-07-28T13:00:05.931Z","datePublished":"2026-09-06T02:26:51.649Z","dateUpdated":"2026-09-07T11:17:23.315Z"},"containers":{"cna":{"providerMetadata":{"orgId":"b15e7b5b-3da4-40ae-a43c-f7aa60e62599","shortName":"Wordfence","dateUpdated":"2026-09-06T02:26:51.649Z"},"affected":[{"vendor":"hivepress","product":"HivePress Authentication","versions":[{"version":"0","status":"affected","lessThanOrEqual":"1.1.4","versionType":"semver"}],"defaultStatus":"unaffected"}],"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. 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."}],"title":"HivePress Authentication <= 1.1.4 - Unauthenticated Authentication Bypass via 'access_token' Parameter to Facebook Authenticator","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"}],"problemTypes":[{"descriptions":[{"lang":"en","description":"CWE-287 Improper Authentication","cweId":"CWE-287","type":"CWE"}]}],"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"}}],"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":[{"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"}}}],"title":"CISA ADP Vulnrichment","providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2026-09-07T11:17:23.315Z"}}]}}