CVE-2024-32564 in PostX Plugin
Summary
by MITRE • 04/18/2024
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in WPXPO PostX ultimate-post allows DOM-Based XSS.This issue affects PostX: from n/a through <= 4.0.1.
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Analysis
by VulDB Data Team • 04/02/2026
The vulnerability identified as CVE-2024-32564 represents a critical cross-site scripting weakness within the WPXPO PostX ultimate-post plugin, specifically manifesting as a DOM-based XSS flaw that poses significant risks to web application security. This vulnerability resides in the improper neutralization of input during web page generation processes, creating an attack vector where malicious scripts can be injected into web pages viewed by other users. The affected version range spans from an unspecified initial version through version 4.0.1, indicating that any installation within this scope remains susceptible to exploitation. The DOM-based nature of this XSS vulnerability means that the malicious script is executed within the victim's browser context, leveraging the Document Object Model to manipulate web page content dynamically. This particular weakness falls under CWE-79 which specifically addresses cross-site scripting vulnerabilities, and more precisely aligns with CWE-749 which deals with dangerous methods or functions, particularly those involving DOM manipulation and script execution.
The operational impact of this vulnerability extends beyond simple data theft or session hijacking, as attackers can exploit the DOM-based XSS flaw to execute arbitrary JavaScript code within the context of legitimate user sessions. This enables attackers to perform actions such as stealing cookies, modifying page content, redirecting users to malicious sites, or even conducting more sophisticated attacks like credential harvesting or privilege escalation. The vulnerability's presence in the PostX plugin suggests that websites utilizing this tool for content management or blog functionality become potential attack surfaces where user interactions with the web application can trigger malicious script execution. The attack typically occurs when user-provided input is not properly sanitized or validated before being processed and rendered within the DOM structure, allowing attackers to inject malicious payloads through parameters or input fields that are then interpreted by the browser as legitimate script content.
Security practitioners should recognize this vulnerability as part of the broader ATT&CK framework under the T1059.007 technique for Scripting, specifically targeting web application interfaces where DOM manipulation occurs. The vulnerability's exploitation requires minimal prerequisites, as it leverages the inherent trust relationship between the web application and its users, making it particularly dangerous in environments where users interact with content management systems. Organizations running affected versions of PostX should immediately implement mitigation strategies including input validation, output encoding, and the implementation of Content Security Policies to prevent unauthorized script execution. The vulnerability's remediation involves updating to patched versions of the plugin, implementing proper input sanitization mechanisms, and establishing comprehensive monitoring for suspicious user activities that may indicate exploitation attempts. Additionally, security measures should include regular vulnerability assessments and penetration testing to identify similar weaknesses in other web applications and plugins that may be similarly susceptible to DOM-based cross-site scripting attacks, as these vulnerabilities often share common architectural flaws and can be exploited through similar vectors within the broader web application ecosystem.
The implications of this vulnerability extend to broader security frameworks and compliance requirements, particularly in environments governed by standards such as NIST SP 800-53 or ISO 27001, where proper input validation and output encoding are fundamental controls for preventing injection attacks. Organizations should treat this vulnerability as a high-priority issue requiring immediate attention, as the combination of DOM-based execution and the potential for session manipulation makes it particularly dangerous in enterprise environments where user trust and data integrity are paramount. The vulnerability's classification as a persistent security risk emphasizes the importance of ongoing security assessments and patch management processes to ensure that similar weaknesses in other plugins or web applications are identified and addressed proactively.