CVE-2026-6400: Child Height Predictor by Ostheimer <= 1.3 - Cross-Site Request Forgery to Settings Update via Plugin Settings Form
The Child Height Predictor by Ostheimer plugin for WordPress is vulnerable to Cross-Site Request Forgery in all versions up to and including 1.3. This is due to missing nonce verification in the options() function, which handles plugin settings updates. The form template does not include a wp_nonce_field() call, and the handler never calls check_admin_referer() or wp_verify_nonce(). This makes it possible for unauthenticated attackers to trick a site administrator into clicking a link or visiting a malicious page that submits a forged POST request, causing unauthorized changes to the plugin settings such as unit preferences to be persisted to the database via update_option().
Affected Software
Event History
Frequently Asked Questions
What is the severity of CVE-2026-6400?
CVE-2026-6400 is classified as a medium severity Cross-Site Request Forgery vulnerability.
How do I fix CVE-2026-6400?
To fix CVE-2026-6400, update the Child Height Predictor plugin to version 1.4 or later, which includes the necessary nonce verification.
Which versions are affected by CVE-2026-6400?
CVE-2026-6400 affects all versions of Child Height Predictor by Ostheimer up to and including version 1.3.
Is CVE-2026-6400 exploitable?
Yes, CVE-2026-6400 is exploitable as it allows attackers to perform unauthorized actions due to the absence of nonce verification.
Can I mitigate the risk of CVE-2026-6400 without updating?
Mitigating the risk of CVE-2026-6400 without updating is difficult, but limiting user permissions and implementing Web Application Firewalls may help reduce exposure.