CVE-2025-9890 Theme Editor <= 3.0 - Cross-Site Request Forgery to Remote Code Execution
Unauthenticated attackers can achieve remote code execution by tricking site administrators into clicking a link due to missing nonce validation in the Theme Editor plugin.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2025-9890?
CVE-2025-9890 is a high-severity vulnerability in mndpsingh287 Theme Editor, published on 18 Oct 2025. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Official description
The Theme Editor plugin for WordPress is vulnerable to Cross-Site Request Forgery in all versions up to, and including, 3.0. This is due to missing or incorrect nonce validation on the 'theme_editor_theme' page. This makes it possible for unauthenticated attackers to achieve remote code execution via a forged request granted they can trick a site administrator into performing an action such as clicking on a link.
Weakness: CWE-352
Which versions are affected by CVE-2025-9890?
How do I fix CVE-2025-9890?
No fix has been published for CVE-2025-9890 yet. Limit exposure of the affected software until one is available.
Is CVE-2025-9890 being exploited?
There is no known exploitation of CVE-2025-9890 in the wild and no public exploit code.
Sources
Also known as GHSA-fwv9-crcm-w227.