CVE-2024-32549 in Related Posts for WordPress Plugin
Summary
by MITRE • 04/17/2024
Cross-Site Request Forgery (CSRF) vulnerability in Microkid Related Posts for WordPress allows Cross-Site Scripting (XSS).This issue affects Related Posts for WordPress: from n/a through 4.0.3.
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Analysis
by VulDB Data Team • 04/05/2025
This vulnerability represents a critical security flaw in the Microkid Related Posts for WordPress plugin that combines cross-site request forgery with cross-site scripting attacks. The vulnerability exists in versions prior to 4.0.4 and creates a dangerous attack vector where malicious actors can exploit the CSRF mechanism to inject malicious scripts into the target system. The flaw stems from inadequate validation and sanitization of user input within the plugin's administrative interfaces, specifically in how it handles requests from authenticated users. When a victim visits a malicious website or clicks on a crafted link while authenticated to a WordPress site running the vulnerable plugin, the attacker can execute unauthorized actions that ultimately lead to XSS exploitation.
The technical implementation of this vulnerability demonstrates a classic CSRF attack pattern where the attacker crafts a malicious request that leverages the victim's authenticated session to perform unintended operations. The plugin fails to implement proper anti-CSRF tokens or referer validation checks, allowing attackers to bypass authentication mechanisms. The vulnerability is particularly concerning because it operates at the administrative level of WordPress, where attackers can manipulate plugin settings, modify content, or potentially escalate privileges. This flaw aligns with CWE-352 which specifically addresses cross-site request forgery vulnerabilities, while also creating conditions that enable XSS execution through the compromised administrative interface.
The operational impact of this vulnerability extends beyond simple data theft or modification. Attackers can leverage the CSRF weakness to establish persistent backdoors, modify plugin configurations, or inject malicious code that executes in the context of other users' browsers. The XSS component allows for session hijacking, credential theft, and the potential to spread malware throughout the affected WordPress network. This creates a multi-vector attack scenario where initial CSRF exploitation can lead to full system compromise. The vulnerability affects all WordPress installations running the affected plugin version, making it particularly dangerous in environments where multiple sites use the same vulnerable plugin.
Mitigation strategies should focus on immediate plugin updates to version 4.0.4 or later, which includes proper CSRF token implementation and enhanced input validation. Administrators should also implement additional security measures such as role-based access controls, regular security audits, and monitoring for unauthorized plugin modifications. The implementation of Content Security Policy headers can provide additional protection against XSS exploitation even if CSRF protection fails. Organizations should also consider network-level protections such as web application firewalls and regular vulnerability scanning to detect similar issues in other plugins or components. This vulnerability highlights the importance of maintaining up-to-date security practices and following the principle of least privilege in WordPress environments to minimize the impact of such combined attack vectors.