WP Crontrol Remote Code Execution Vulnerability (CVE-2024-28850) — High Severity

The WP Crontrol plugin for WordPress, a popular tool for managing scheduled tasks on websites, has been identified with a potential security weakness. This isn’t a direct vulnerability within WP Crontrol itself, but rather a scenario where its features could be misused if your WordPress site already suffers from other, separate vulnerabilities. It’s a critical reminder of how seemingly innocuous features can become part of a larger security exploit chain.

The core issue revolves around WP Crontrol’s ability for administrative users to create and execute PHP code within the WP-Cron system. While this is a legitimate function, it creates an opportunity for a malicious actor to achieve Remote Code Execution (RCE) if they first compromise the site through another vulnerability. Think of it like this: if someone gains access to your house through a broken window (a separate vulnerability), they could then use your own tools (WP Crontrol’s code execution feature) to cause further damage.

This vulnerability chaining could happen under several conditions:

• If your site has a separate SQL injection (SQLi) vulnerability in any other plugin, theme, or even in WordPress core itself.
• If your site’s database is compromised at the hosting level.
• If there’s a way to update arbitrary options in your WordPress wp_options table.
• If an attacker can trigger any arbitrary action, filter, or function with control over its parameters.

This highlights the importance of comprehensive security, as weaknesses in one area can pave the way for more severe attacks through other, otherwise benign, functionalities.

CVE Details

The vulnerability is tracked as CVE-2024-28850. It was initially published on March 25, 2024, and its information was last modified on December 5, 2025. This vulnerability impacts the WP Crontrol plugin.

Affected Products

This potential RCE vulnerability affects the WP Crontrol plugin for WordPress, specifically versions prior to 1.16.2. If you are using any version of WP Crontrol older than 1.16.2, your site could be at risk if other underlying vulnerabilities exist.

Current Status

The status of CVE-2024-28850 is “Analyzed”. This means that the vulnerability has been investigated and understood. A hardening measure has been released to address the potential for misuse.

Severity Level

The severity of this issue is rated as HIGH, with a CVSS score of 8.1. This high rating reflects the significant impact of a potential Remote Code Execution, which could allow attackers to run malicious code on your server if they successfully exploit a chained vulnerability.

Possible Solutions

The developers of WP Crontrol have responded by releasing a crucial update to address this potential security concern. As a hardening measure, WP Crontrol version 1.16.2 introduces an “anti-tampering mechanism for PHP cron events.” This mechanism helps prevent malicious modification of scheduled PHP code, even if an attacker manages to gain some access to your site’s underlying systems.

To effectively protect your WordPress website and minimize risks, we highly recommend the following actions:

• Update WP Crontrol immediately to version 1.16.2 or later. This is the most direct step to benefit from the new security hardening.
• Regularly update all other plugins, themes, and your WordPress core to their latest versions. This is a fundamental practice in WordPress security best practices as many exploits rely on outdated software.
• Implement robust security practices, such as strong, unique passwords, two-factor authentication, and regular security audits.
• Be vigilant about other vulnerabilities. This specific issue highlights the danger of SQL Injection vulnerabilities or other methods that could compromise your database or wp_options table.
• Consider using a reputable Web Application Firewall (WAF). A WAF can help detect and block malicious traffic, including attempts to exploit vulnerabilities in plugins or themes.

References

https://github.com/johnbillion/wp-crontrol/releases/tag/1.16.2
https://github.com/johnbillion/wp-crontrol/security/advisories/GHSA-9xvf-cjvf-ff5q