ZT Captcha <= 1.0.4 - Cross-Site Request Forgery to Settings Update

Cross-Site Request Forgery (CSRF)
CVE CVE-2026-1075
CVSS Medium (4.3)
Publicly Published January 23, 2026
Last Updated January 24, 2026
Researcher Muhammad Nur Ibnu Hubab (Ibnu)
Description

The ZT Captcha plugin for WordPress is vulnerable to Cross-Site Request Forgery in all versions up to, and including, 1.0.4. This is due to improper nonce validation on the save_ztcpt_captcha_settings action where the nonce check can be bypassed by sending an empty token value. This makes it possible for unauthenticated attackers to modify the plugin's settings via a forged request granted they can trick a site administrator into performing an action such as clicking on a link.

References

1 affected software package

Software Type Plugin
Software Slug zt-captcha (view on wordpress.org)
Patched? No
Affected Version
  • <= 1.0.4
Patched Version
This record contains material that is subject to copyright

Copyright 2012-2026 Defiant Inc.
License: Defiant hereby grants you a perpetual, worldwide, non-exclusive, no-charge, royalty-free, irrevocable copyright license to reproduce, prepare derivative works of, publicly display, publicly perform, sublicense, and distribute this software vulnerability information. Any copy of the software vulnerability information you make for such purposes is authorized provided that you include a hyperlink to this vulnerability record and reproduce Defiant's copyright designation and this license in any such copy. License Detail.