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 Mixlr Shortcode plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'mixlr' shortcode in all versions up to, and including, 1.0.1. This is due to insufficient input sanitization and output escaping on the 'url' attribute. 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 Mixlr Shortcode plugin contains a cross-site scripting (XSS) vulnerability that allows authenticated users to inject malicious scripts. An attacker with low-level site access can craft a shortcode that executes JavaScript in other users' browsers, potentially stealing session tokens or performing actions on their behalf. The vulnerability affects all versions up to 1.0.1.
What an attacker can do
Inject JavaScript code that runs in other users' browsers when they view affected pages.
Potential impact on your site
Authenticated users' sessions and data can be compromised; attackers can deface content or steal admin credentials.
Conditions required to exploit
Attacker must have a low-privilege account on the site (e.g., contributor or subscriber role).
Key dates
External resources
