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 MediaPress plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the plugin's mpp-uploader shortcode in all versions up to, and including, 1.6.1 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
MediaPress versions up to 1.6.1 contain a stored cross-site scripting (XSS) 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 payloads that execute in other users' browsers when they view affected content.
What an attacker can do
Inject malicious scripts that execute in other users' browsers and affect site functionality.
Potential impact on your site
Authenticated users can inject code affecting other visitors and site operations; upgrade to 1.6.3 or later.
Conditions required to exploit
Attacker must have a low-privilege user account on the site; no user interaction required.
Key dates
External resources
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