CVE-2024-0830 in Comments Extra Fields for Post, Pages and CPT Plugin
Summary
by MITRE • 03/13/2024
The Comments Extra Fields For Post,Pages and CPT plugin for WordPress is vulnerable to Cross-Site Request Forgery in all versions up to, and including, 5.0. This is due to missing or incorrect nonce validation on several ajax actions. This makes it possible for unauthenticated attackers to invoke those actions via a forged request granted they can trick a site administrator into performing an action such as clicking on a link. As a result, they may modify comment form fields and update plugin settings.
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Analysis
by VulDB Data Team • 04/12/2026
The CVE-2024-0830 vulnerability affects the Comments Extra Fields For Post Pages and CPT plugin for WordPress, representing a critical cross-site request forgery weakness that impacts all versions up to and including 5.0. This vulnerability stems from inadequate nonce validation mechanisms within the plugin's ajax handling functionality, creating a significant security gap that can be exploited by unauthenticated attackers. The flaw specifically targets the plugin's ajax actions that manage comment form fields and plugin settings, making it particularly dangerous for WordPress administrators who may inadvertently trigger malicious requests.
The technical implementation of this vulnerability involves the absence or improper validation of nonce tokens in critical ajax endpoints. Nonce validation serves as a cryptographic countermeasure that ensures requests originate from legitimate sources within the WordPress environment. When these validation checks are missing or incorrectly implemented, attackers can craft malicious requests that appear to come from authenticated administrators. The vulnerability operates through a social engineering vector where attackers must trick administrators into clicking on malicious links or visiting compromised websites, but once triggered, the forged requests can execute without requiring authentication. This makes the attack surface particularly concerning as it leverages the trust relationship between administrators and the WordPress admin interface.
The operational impact of this vulnerability extends beyond simple data modification capabilities to encompass potential system compromise and data integrity violations. Attackers can exploit this weakness to manipulate comment form fields, which may contain sensitive configuration data or user information, and can also update plugin settings that could alter the behavior of the entire commenting system. The vulnerability's ability to affect both post and page comment forms, as well as custom post types, creates multiple attack vectors that can be leveraged to gain persistent access to the WordPress administrative environment. This makes the vulnerability particularly dangerous as it can be used to establish backdoors or to modify critical site functionality that affects user experience and data security.
Organizations should immediately implement mitigation strategies that include updating to patched versions of the plugin, implementing additional security measures such as wp_nonce_check() validation on all ajax endpoints, and establishing monitoring protocols for suspicious administrative activities. The vulnerability aligns with CWE-352, which specifically addresses cross-site request forgery weaknesses in web applications, and represents a clear violation of the principle of least privilege in web security practices. From an ATT&CK framework perspective, this vulnerability maps to T1078 credential access and T1566 initial access techniques, as it enables attackers to leverage administrative privileges through forged requests. Administrators should also consider implementing additional security layers including web application firewalls, request validation, and regular security audits to prevent exploitation of similar nonce validation flaws in other WordPress plugins and themes.