CVSS base score
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N
What the vulnerability does
The User Registration plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the plugin's urcr_restrict shortcode in all versions up to, and including, 4.2.4 due to insufficient input sanitization and output escaping on user supplied attributes. 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
A cross-site scripting (XSS) vulnerability in User Registration & Membership allows authenticated users to inject malicious scripts that execute in other users' browsers. The vulnerability affects all versions up to 4.2.4. An attacker with a low-privilege account can craft a payload that impacts other site visitors, potentially stealing session tokens or performing actions on their behalf.
What an attacker can do
Inject JavaScript that runs in other users' browsers and affects the entire site.
Potential impact on your site
Authenticated users can compromise other visitors' sessions and data across your site.
Conditions required to exploit
Attacker needs a low-privilege account on the site; no user interaction required.
Key dates
External resources
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