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 iVysilani Shortcode plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'width' shortcode attribute in all versions up to, and including, 3.0 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
The iVysilani Shortcode plugin versions 3.0 and earlier contain a cross-site scripting (XSS) vulnerability in shortcode processing. An authenticated user with low privileges can inject malicious scripts that execute in other users' browsers, including site administrators. The vulnerability affects the entire site scope due to how shortcodes are rendered across multiple pages.
What an attacker can do
Inject malicious JavaScript that runs in other users' browsers, potentially stealing session tokens or admin credentials.
Potential impact on your site
Authenticated users can compromise admin accounts and take control of your site without requiring admin access themselves.
Conditions required to exploit
Attacker must have a low-privilege user account (e.g., contributor or subscriber) on the site.
Key dates
External resources
