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 Shouty plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the shouty shortcode in all versions up to, and including, 0.2.1 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
Shouty versions 0.2.1 and earlier contain a cross-site scripting (XSS) vulnerability that allows an authenticated attacker to inject malicious scripts. The vulnerability has a changed scope, meaning the impact can extend beyond the vulnerable component itself. Low-privileged users can exploit this without user interaction to compromise site integrity and access sensitive information.
What an attacker can do
Inject and execute malicious JavaScript in the browser of other users or site visitors.
Potential impact on your site
Authenticated users can inject scripts that affect other users' sessions, steal data, or deface content across the site.
Conditions required to exploit
Attacker must have a low-privileged user account on the site; no user interaction required.
Key dates
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