EUVD-2026-72043
GHSA-55w6-5hh5-wj3r
Severity by source
AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
AC:H because attacker must independently acquire victim's Facebook access token; UI:R reflects dependency on victim having previously linked their account email to Facebook; full C/I/A:H because successful exploitation yields complete account takeover.
Primary rating from Vendor (Wordfence).
CVSS VectorVendor: Wordfence
Lifecycle Timeline
3DescriptionCVE.org
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.
AnalysisAI
Authentication bypass in HivePress Authentication plugin for WordPress (≤1.1.4) allows an unauthenticated network attacker to log in as any WordPress user - including administrators - whose account email is linked to a Facebook account. The plugin's Facebook OAuth handler forwards the caller-supplied access_token directly to the Facebook Graph API and blindly trusts the returned email and user ID, performing no /debug_token audience validation and no comparison of the token's app_id against the configured hp_facebook_app_id. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Facebook Login must be explicitly enabled in HivePress settings (hp_user_auth_methods must include 'facebook') and hp_facebook_app_id must be configured - these are non-default settings requiring deliberate administrator action, so the vulnerability is not present in default HivePress installations. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 3.1 score of 7.5 (AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H) reflects a genuine tension between catastrophic post-exploitation impact and a non-trivial pre-exploitation barrier. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | Full exploit scenario with step-by-step reproduction available after sign-in. |
| Remediation | Update HivePress Authentication to the version containing fix commit f97d9109002905cf57597d15c535d1155dc64657, available via the WordPress plugin changeset at https://plugins.trac.wordpress.org/changeset/3664231/hivepress-authentication; the exact released version number following 1.1.4 is not explicitly stated in available data but corresponds to the patched plugin in the WordPress repository. … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours: identify all WordPress installations using HivePress Authentication plugin ≤1.1.4; disable Facebook OAuth login functionality in plugin settings immediately or uninstall the plugin if no alternative authentication is available; audit all administrative user login logs for suspicious activity from unfamiliar IP addresses or locations and reset passwords for any compromised accounts. …
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External POC / Exploit Code
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