Signal is active with 1 mentions in latest observed window
Recommended action window: Monitor and triage in normal cycle
NVD description
The Kcaptcha plugin for WordPress is vulnerable to Cross-Site Request Forgery in all versions up to and including 1.0.1. This is due to missing nonce validation in the plugin's settings page handler (admin/setting.php). The settings form does not include a wp_nonce_field() and the form processing code does not call wp_verify_nonce() or check_admin_referer() before saving settings to the database via $wpdb->update(). This makes it possible for unauthenticated attackers to modify the plugin's CAPTCHA settings (enabling or disabling CAPTCHA on login, registration, lost password, and comment forms) via a forged request, granted they can trick a site administrator into performing an action such as clicking a link.
Priority
LOW
Exploitation
NONE
PoC
NONE
Patch
NONE
Momentum
STABLE
CVE-2026-4121 The Kcaptcha plugin for WordPress is vulnerable to Cross-Site Request Forgery in all versions up to and including 1.0.1. This is due to missing nonce validation in the … https://www.cve.org/CVERecord?id=CVE-2026-4121
Post summary
The post announces a CSRF vulnerability (CVE-2026-4121) in the Kcaptcha WordPress plugin caused by missing nonce validation in versions up to 1.0.1, with no evidence of PoC, exploits, or patches.
CVE-2026-4121 Cross-Site Request Forgery in Kcaptcha Plugin for WordPress Versions Up to 1.0.1 https://vulmon.com/vulnerabilitydetails?qid=CVE-2026-4121
Post summary
A Cross‑Site Request Forgery vulnerability (CVE‑2026‑4121) affects the Kcaptcha plugin for WordPress up to version 1.0.1, with the issue disclosed via a vulnerability report link.