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 WP AD Gallery plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'startindex' parameter of the ad-gallery shortcode in all versions up to, and including, 1.3. This is 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
WP AD Gallery versions 1.3 and earlier contain a cross-site scripting vulnerability that allows authenticated users to inject malicious scripts. The vulnerability affects the site's scope, meaning injected code can impact other users and site functionality. An attacker with low-level access can craft malicious input that executes in other users' browsers without requiring additional user interaction.
What an attacker can do
Inject malicious JavaScript that executes in other users' browsers and affects site functionality.
Potential impact on your site
Authenticated users can inject scripts affecting other visitors and site operations; potential for credential theft or malware distribution.
Conditions required to exploit
Attacker must have a low-privilege user account on the site; no user interaction required.
Key dates
External resources
