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CVE-2026-18056— HivePress Authentication <= 1.1.4 - Unauthenticated Authentication Bypass via 'access_token' Parameter to Facebook Authenticator

Quick assessment

Affected
hivepress HivePress Authentication
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

WordPress 的 HivePress Authentication 插件在所有版本中（包括 1.1.4 及更早版本）存在认证绕过漏洞，具体通过 参数触发。 该漏洞的根源在于 函数中的 Facebook 认证器：它会将攻击者提供的 转发给 Facebook Graph API，并直接采信返回的电子邮件地址和用户 ID，而未进行任何应用 ID（app_id）或受众（audience）校验——具体来说，既未调用 端点验证令牌，也未将令牌中的 与插件配置的 进行比对。 因此，未经认证的攻击者可以利用此漏洞，只要他们能

CVSS 7.5 · High
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I. Basic Information for CVE-2026-18056

Vulnerability Information
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Vulnerability Title
HivePress Authentication <= 1.1.4 - Unauthenticated Authentication Bypass via 'access_token' Parameter to Facebook Authenticator
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
认证机制不恰当
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
hivepress HivePress Authentication 0 ~ 1.1.4 -

II. Public POCs for CVE-2026-18056

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III. Intelligence Information for CVE-2026-18056

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Patches & Fixes for CVE-2026-18056 (2)

Vendor Pages for CVE-2026-18056 (3)

IV. Related Vulnerabilities

Same vendor: hivepress
Same weakness: CWE-287

V. Comments for CVE-2026-18056

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