CVSS base score
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N
What the vulnerability does
The Nextend Social Login and Register plugin for WordPress is vulnerable to Cross-Site Request Forgery in all versions up to, and including, 3.1.21. This is due to missing or incorrect nonce validation on the 'unlinkUser' function. This makes it possible for unauthenticated attackers to unlink the user's social login via a forged request granted they can trick a site administrator into performing an action such as clicking on a link.
Explanation of Vulnerability in Simple Terms
Nextend Social Login and Register versions up to 3.1.21 contain a cross-site request forgery (CSRF) vulnerability. An attacker can craft a malicious link or page that, when visited by a logged-in site administrator, performs unwanted actions on the site without their knowledge. The vulnerability requires user interaction—the admin must click the link or visit the attacker's page. Data integrity is at risk, but not confidentiality or availability.
What an attacker can do
Trick a logged-in admin into performing unwanted actions via a malicious link or page.
Potential impact on your site
An attacker can modify site settings or data if they trick an admin into clicking a malicious link.
Conditions required to exploit
Admin must click a malicious link or visit an attacker-controlled page while logged in.
Key dates
External resources
