Temporary Login <= 1.0.0 - Authentication Bypass to Account Takeover

Summary

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.

Timeline

1. May 1, 2026, 9:26 AM UTCCVE published
2. May 1, 2026, 2:26 PM UTCCISA SSVC assessment

   Exploitation: none · Automatable: yes · Technical impact: total

3. May 1, 2026, 2:27 PM UTCRecord last updated
4. May 26, 2026Public exploit on Exploit-DB

   EDB-52575

Affected versions

• elemntor Temporary Login

  through 1.0.0

References 9