CVE-2025-12400 LMB^Box Smileys <= 3.2 - Cross-Site Request Forgery to Stored Cross-Site Scripting
Attackers can trick admins into updating settings and injecting scripts via CSRF, leading to stored XSS and potential site compromise.
- 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-2025-12400?
CVE-2025-12400 is a medium-severity vulnerability in lmbbox LMB^Box Smileys, published on 4 Nov 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 LMB^Box Smileys plugin for WordPress is vulnerable to Cross-Site Request Forgery in all versions up to, and including, 3.2. This is due to missing or incorrect nonce validation on the manage_page() function. This makes it possible for unauthenticated attackers to update settings and inject malicious web scripts 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-2025-12400?
How do I fix CVE-2025-12400?
No fix has been published for CVE-2025-12400 yet. Limit exposure of the affected software until one is available.
Is CVE-2025-12400 being exploited?
There is no known exploitation of CVE-2025-12400 in the wild and no public exploit code.
Sources
Also known as GHSA-cx6v-gm6w-p423.