CVE-2024-0592 in Related Posts Plugin
Summary
by MITRE • 03/13/2024
The Related Posts for WordPress plugin for WordPress is vulnerable to Cross-Site Request Forgery in all versions up to, and including, 2.2.1. This is due to missing or incorrect nonce validation on the handle_create_link() function. This makes it possible for unauthenticated attackers to add related posts to other posts via a forged request granted they can trick a site administrator into performing an action such as clicking on a link. This ultimately makes it possible for attackers to view draft and password protected posts.
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Analysis
by VulDB Data Team • 04/12/2026
The CVE-2024-0592 vulnerability affects the Related Posts for WordPress plugin, a widely used tool that enables website administrators to display related content on their WordPress sites. This plugin facilitates content discovery by suggesting posts that are thematically connected to the current page, enhancing user engagement and site navigation. The vulnerability exists in all versions up to and including 2.2.1, representing a critical security flaw that undermines the integrity of WordPress installations. The issue stems from insufficient validation mechanisms within the plugin's core functionality, specifically in how it handles user requests and manages administrative actions.
The technical flaw manifests in the handle_create_link() function which lacks proper nonce validation. A nonce is a cryptographic value that is unique to a specific request and time period, designed to prevent cross-site request forgery attacks by ensuring that requests originate from legitimate sources within the intended application context. In this case, the absence of nonce verification allows attackers to forge requests that appear to come from authenticated administrators. The vulnerability operates under the principle that an attacker can manipulate the plugin's behavior by crafting malicious requests that bypass normal access controls. This flaw directly corresponds to CWE-352, which defines Cross-Site Request Forgery as a vulnerability where an attacker tricks a victim into executing unwanted actions on a web application.
The operational impact of this vulnerability is significant and multifaceted. Attackers can exploit this weakness to add related posts to other posts without proper authorization, potentially manipulating content relationships and affecting site structure. More critically, the vulnerability enables unauthorized access to draft and password-protected posts, which represents a severe compromise of content confidentiality. This access can be achieved through social engineering tactics that trick administrators into clicking malicious links or visiting compromised websites. The attack vector requires minimal technical expertise and can be executed through standard web browser interactions, making it particularly dangerous for WordPress sites that rely on the plugin for content management. The vulnerability essentially allows attackers to gain elevated privileges through manipulation of the plugin's administrative functions.
The security implications extend beyond simple content manipulation to encompass broader information disclosure risks. When attackers can access draft posts, they gain insight into unpublished content, upcoming features, or sensitive information that should remain confidential until release. This vulnerability creates a pathway for attackers to potentially discover internal business strategies, upcoming product launches, or other proprietary information. The attack model aligns with ATT&CK technique T1078.004, which describes legitimate credentials used for unauthorized access, as the exploitation leverages the administrator's session context to perform unauthorized actions. The vulnerability also represents a failure in the principle of least privilege, where the plugin does not properly enforce access controls for administrative functions.
Mitigation strategies should prioritize immediate plugin updates to versions that address the nonce validation issue, as this represents the most direct solution to the vulnerability. Site administrators must ensure that all WordPress installations maintain current plugin versions and implement regular security monitoring to identify potential exploitation attempts. Additional protective measures include implementing Content Security Policy headers to restrict cross-origin requests, monitoring for unusual administrative activities, and conducting regular security audits of installed plugins. The vulnerability highlights the importance of proper input validation and authentication mechanisms in web applications, particularly for plugins that handle administrative functions. Organizations should also consider implementing web application firewalls to detect and block suspicious requests that attempt to exploit CSRF vulnerabilities. Regular security training for administrators can help prevent social engineering attacks that exploit this vulnerability by tricking users into performing malicious actions.