What the vulnerability does
01Description
The The Shortcode Ajax plugin for WordPress is vulnerable to arbitrary shortcode execution in all versions up to, and including, 1.0. This is due to the software allowing users to execute an action that does not properly validate a value before running do_shortcode. This makes it possible for unauthenticated attackers to execute arbitrary shortcodes.
Explanation of Vulnerability in Simple Terms
02Summary
Shortcode Ajax versions 1.0 and earlier contain a code injection vulnerability in how they process shortcode parameters. An authenticated user with low privileges can inject and execute arbitrary PHP code through improperly sanitized input, potentially compromising site data or functionality. The vulnerability requires valid site access but no additional user interaction.
What an attacker can do
03Attacker Capabilities
Run arbitrary PHP code on the site by injecting malicious code through shortcode parameters.
Potential impact on your site
04Site Impact
An authenticated user can execute code to read/modify site data or compromise site functionality.
Conditions required to exploit
05Prerequisites
Attacker must have a low-privilege authenticated account on the site.
Key dates
06Disclosure timeline
December 13, 2025
CVE published
April 8, 2026
Record updated