CVE-2026-8423 JaviBola Custom Theme Test <= 2.0.5 - Cross-Site Request Forgery
Unauthenticated attackers can trick administrators into changing the active theme via CSRF, requiring an upgrade to fix.
- 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-2026-8423?
CVE-2026-8423 is a medium-severity vulnerability in JaviBola Custom Theme Test, published on 20 May 2026. 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 JaviBola Custom Theme Test plugin for WordPress is vulnerable to Cross-Site Request Forgery in all versions up to, and including, 2.0.5. This is due to missing or incorrect nonce validation on the options page. This makes it possible for unauthenticated attackers to change the site's active theme by modifying the jbct_theme option 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-2026-8423?
How do I fix CVE-2026-8423?
No fix has been published for CVE-2026-8423 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-8423 being exploited?
There is no known exploitation of CVE-2026-8423 in the wild and no public exploit code.
Sources
Also known as GHSA-2cxv-v4mv-9w27.