WordPress Oxygen Builder Plugin <= 4.8.3 is vulnerable to Remote Code Execution (RCE)

Patch priority: medium
Medium priority vPatch available
Vulnerable version
<= 4.8.3 Vulnerable version
Not fixed
No official fix available Fixed version

03 April 2024 by Patchstack


CVSS 9.9

This vulnerability is moderately dangerous and expected to become exploited.


Remote Code Execution (RCE)

This could allow a malicious actor to execute commands on the target website. This can be used to gain backdoor access to then take full control of the website.

This is a general description of this vulnerability type, specific impact varies case by case. CVSS score is a way to evaluate and rank reported vulnerabilities in a standardized and repeatable way, but it is not ideal for WordPress.


We advise to mitigate or resolve the vulnerability immediately.


This is not a false positive. The "Edit Only" permission which is meant to grant limited content edit access to users on Oxygen is by default vulnerable to RCE. Regardless of the existing warnings in place, code execution on the lowest permission available is against common access control principles and should not be made possible. Researcher advisory - https://snicco.io/vulnerability-disclosure/oxygen/client-control-remote-code-execution-oxygen-4-8-1

Have additional information or questions about this entry? Let us know.


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Reported by

Snicco Snicco
10 Feb 2024
Published by Patchstack

Published by Patchstack

03 Apr 2024

Over 70% of all known WordPress vulnerabilities were originally published by Patchstack in 2023 and hundreds of popular plugins such as Elementor, RankMath and WProcket have set Patchstack as their official security partner.

Patchstack vPatching auto-mitigates security vulnerabilities even when there's no official patch available. It's the fastest and most effective way to eliminate new security vulnerabilities without sacrificing performance.

Hackers automate attacks against new security vulnerabilities to take over as many websites as they can before users have time to patch and update. The attacks are opportunistic and victims are not chosen - everyone is a target.

We recommend reaching out to your hosting provider for server-side malware scanning or use a professional incident response service. Don't rely on plugin based malware scanners as they are commonly tampered with by malware.

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