Skip to content
CVSS 9.8 · CRITICAL

CVE-2026-7567

The Temporary Login plugin for WordPress is vulnerable to Authentication Bypass in versions up to and including 1.0.0. This is due to improper input validation in the maybe_login_temporary_user() function, which fails to verify that the 'temp-login-token' GET parameter is a scalar string before processing it. When the parameter is supplied as an array, PHP's empty() check is bypassed and sanitize_key() returns an empty string, which is then passed as the meta_value to get_users(). WordPress ignores an empty meta_value and returns all users matching the meta_key '_temporary_login_token', allowing authentication without a valid token. This makes it possible for unauthenticated attackers to authenticate as any active temporary login user by sending a single crafted GET request.

Ver en NVD

Análisis

The Temporary Login plugin for WordPress (up to version 1.0.0) contains a critical authentication bypass. An unauthenticated attacker can log in as any active temporary user by submitting the login token as an array in a GET request, bypassing PHP validation checks. If you use this plugin to provide temporary access to developers or clients, update immediately.

Severidad

Puntaje: 9.8(CRITICAL)
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
AV: NETWORK
AC: LOW
PR: NONE
UI: NONE
S: UNCHANGED
C: HIGH
I: HIGH
A: HIGH
Tipo de falla (CWE): CWE-288

EPSS

Probabilidad de explotación (próx. 30 días): 0.0007 (0.1%)
Percentil: 20.2%
EPSS: 2026-05-06

Descripción técnica

The Temporary Login plugin for WordPress is vulnerable to Authentication Bypass in versions up to and including 1.0.0. This is due to improper input validation in the maybe_login_temporary_user() function, which fails to verify that the 'temp-login-token' GET parameter is a scalar string before processing it. When the parameter is supplied as an array, PHP's empty() check is bypassed and sanitize_key() returns an empty string, which is then passed as the meta_value to get_users(). WordPress ignores an empty meta_value and returns all users matching the meta_key '_temporary_login_token', allowing authentication without a valid token. This makes it possible for unauthenticated attackers to authenticate as any active temporary login user by sending a single crafted GET request.

Publicada: 1/5/2026, 10:15:58
Última modificación: 1/5/2026, 15:26:24

Referencias

InicioEventosBlogRecursosEquipo