CVE-2025-14539 MEDIUM

CVE-2025-14539: Shortcode Loader <= 1.0 - Unauthenticated Arbitrary Shortcode Execution via 'code' Parameter

Vendor Rang501
Product Shortcode Ajax
Weakness CWE-94 · Code injection
Published December 13, 2025
Last update April 8, 2026

CVSS base score

5.4/10
Attack vector Network
Attack complexity Low
Privileges required Low
User interaction None
Confidentiality Low
Integrity Low

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N

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