CVE-2025-13486 Advanced Custom Fields: Extended 0.9.0.5 - 0.9.1.1 - Unauthenticated Remote Code Execution in prepare_form
Unauthenticated attackers can execute arbitrary code on the server via the prepare_form function in the Advanced Custom Fields: Extended plugin.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2025-13486?
CVE-2025-13486 is a critical code injection vulnerability in hwk-fr Advanced Custom Fields: Extended, published on 3 Dec 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
The Advanced Custom Fields: Extended plugin for WordPress is vulnerable to Remote Code Execution in versions 0.9.0.5 through 0.9.1.1 via the prepare_form() function. This is due to the function accepting user input and then passing that through call_user_func_array(). This makes it possible for unauthenticated attackers to execute arbitrary code on the server, which can be leveraged to inject backdoors or create new administrative user accounts.
Weakness: CWE-94
Which versions are affected by CVE-2025-13486?
How do I fix CVE-2025-13486?
No fix has been published for CVE-2025-13486 yet. Limit exposure of the affected software until one is available.
Upgrade, and never evaluate templates, expressions or code built from user input. More about Code injection.
Is CVE-2025-13486 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-13486 exists.
Public exploit code: 1 Metasploit module, 1 Nuclei template and 6 proofs of concept on GitHub.
Sources
Also known as GHSA-8q8p-fv92-864w.