WordPress HAPPY Plugin <= 1.0.7 is vulnerable to a high priority Remote Code Execution (RCE)
Get the fastest vulnerability mitigation with Patchstack!
Get startedRisks
CVSS 10This vulnerability is highly dangerous and expected to become exploited.
Note by Patchstack
Due to the specific nature of this vulnerability, all legitimate and illegitimate requests are blocked to cover all scenarios.
10
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.
CVSS score is a way to evaluate and rank reported vulnerabilities in a standardized and repeatable way but which is not ideal for WordPress.
Solutions
We advise to mitigate or resolve the vulnerability immediately.
Automatically mitigate vulnerabilities and keep your websites safe.
Patchstack has issued a mitigation rule to block any attacks until you have updated to a fixed version.
Get the fastest vulnerability mitigation with Patchstack!
Get startedUpdate to version 1.0.8 or later.
Update to version 1.0.8 or later to resolve the vulnerability. Patchstack users can turn on auto-update for vulnerable plugins only.
Details
Timeline
25 Sep, 2025