CVE-2026-18056

{"id": "CVE-2026-18056", "cveTags": [], "metrics": {"ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-18056", "role": "CISA Coordinator", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "total"}], "version": "2.0.3", "timestamp": "2026-09-07T11:03:04.808288Z"}}], "cvssMetricV31": [{"type": "Secondary", "source": "security@wordfence.com", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 7.5, "attackVector": "NETWORK", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H", "integrityImpact": "HIGH", "userInteraction": "REQUIRED", "attackComplexity": "HIGH", "availabilityImpact": "HIGH", "privilegesRequired": "NONE", "confidentialityImpact": "HIGH"}, "impactScore": 5.9, "exploitabilityScore": 1.6}]}, "affected": [{"source": "security@wordfence.com", "affectedData": [{"vendor": "hivepress", "product": "HivePress Authentication", "versions": [{"status": "affected", "version": "0", "versionType": "semver", "lessThanOrEqual": "1.1.4"}], "defaultStatus": "unaffected"}]}], "published": "2026-09-06T03:17:16.467", "references": [{"url": "https://developers.facebook.com/docs/facebook-login/guides/advanced/manual-flow/#confirm", "source": "security@wordfence.com"}, {"url": "https://github.com/hivepress/hivepress-authentication/commit/f97d9109002905cf57597d15c535d1155dc64657", "source": "security@wordfence.com"}, {"url": "https://plugins.trac.wordpress.org/browser/hivepress-authentication/tags/1.1.4/includes/components/class-facebook-authentication.php#L59", "source": "security@wordfence.com"}, {"url": "https://plugins.trac.wordpress.org/browser/hivepress-authentication/tags/1.1.4/includes/controllers/class-authentication.php#L84", "source": "security@wordfence.com"}, {"url": "https://plugins.trac.wordpress.org/changeset/3664231/hivepress-authentication", "source": "security@wordfence.com"}, {"url": "https://www.wordfence.com/threat-intel/vulnerabilities/id/c0ba6392-e6f7-479a-8b9b-9cea4b140c71?source=cve", "source": "security@wordfence.com"}], "vulnStatus": "Deferred", "weaknesses": [{"type": "Secondary", "source": "security@wordfence.com", "description": [{"lang": "en", "value": "CWE-287"}]}], "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 \u2014 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."}], "lastModified": "2026-09-08T13:12:58.310", "sourceIdentifier": "security@wordfence.com"}