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 Knowledge Base plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the plugin's 'kbalert' shortcode in all versions up to, and including, 2.3.0 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
Knowledge Base versions 2.3.0 and earlier contain a cross-site scripting (XSS) vulnerability that allows authenticated users to inject malicious scripts. The vulnerability affects the scope beyond the vulnerable component, potentially impacting other users and site functionality. An attacker with low-level account access can craft malicious input that executes in other users' browsers, compromising data confidentiality and integrity.
What an attacker can do
Inject malicious scripts that execute in other users' browsers to steal data or modify site content.
Potential impact on your site
Authenticated users can inject scripts affecting other visitors; data theft and site defacement are possible.
Conditions required to exploit
Attacker must have a low-privilege account on the site; no user interaction required from victims.
Key dates
External resources
Related vulnerabilities
