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 Qzzr Shortcode Plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'qzzr' shortcode in all versions up to, and including, 1.0.1. This is due to insufficient input sanitization and output escaping on the 'quiz' 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 Qzzr Shortcode Plugin versions 1.0.1 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 has a changed scope, meaning the impact extends beyond the vulnerable component itself.
What an attacker can do
Inject malicious scripts that run in other users' browsers, potentially stealing session tokens or admin credentials.
Potential impact on your site
Any authenticated user can compromise other users' sessions or steal admin credentials through script injection.
Conditions required to exploit
Attacker must have a low-privilege authenticated account on the site; no user interaction required.
Key dates
External resources
