What the vulnerability does
01Description
The ProcessingJS for WordPress plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the plugin's 'pjs4wp' shortcode in all versions up to, and including, 1.2.2 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
02Summary
ProcessingJS for WordPress versions 1.2.2 and earlier contain a stored cross-site scripting (XSS) vulnerability. An authenticated user with low privileges can inject malicious scripts that execute in the browsers of other site visitors, including administrators. The vulnerability affects the site's scope, meaning the injected code can interact with other parts of WordPress beyond the plugin itself.
What an attacker can do
03Attacker Capabilities
Inject malicious JavaScript that runs in other users' browsers when they view affected pages.
Potential impact on your site
04Site Impact
Compromised user accounts, stolen admin credentials, malware distribution, or site defacement via scripts running in admin browsers.
Conditions required to exploit
05Prerequisites
Attacker must have a low-privilege WordPress account (e.g., subscriber or contributor role).
Key dates
06Disclosure timeline
July 4, 2025
CVE published
April 8, 2026
Record updated
