What the vulnerability does
01Description
The OpenID Connect Generic Client plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the plugin's 'openid_connect_generic_auth_url' shortcode in all versions up to, and including, 3.10.0 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with Contributor-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.
Explanation of Vulnerability in Simple Terms
02Summary
The OpenID Connect Generic Client plugin contains a cross-site scripting (XSS) vulnerability in versions up to 3.10.0. An authenticated user can inject malicious scripts that execute in the browsers of other users, including site administrators. The vulnerability affects the plugin's handling of user input and can impact confidentiality and integrity across the site.
What an attacker can do
03Attacker Capabilities
Inject malicious scripts that execute in other users' browsers, potentially stealing credentials or modifying site content.
Potential impact on your site
04Site Impact
Authenticated users can compromise other accounts, steal admin sessions, or deface site content without additional user clicks.
Conditions required to exploit
05Prerequisites
Attacker must have a low-privilege user account on the site; no user interaction required from victims.
Key dates
06Disclosure timeline
December 18, 2025
CVE published
April 8, 2026
Record updated
