CVE-2022-24585 in PluXml
Summary
by MITRE • 02/15/2022
A stored cross-site scripting (XSS) vulnerability in the component /core/admin/comment.php of PluXml v5.8.7 allows attackers to execute arbitrary web scripts or HTML via a crafted payload in the author parameter.
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Analysis
by VulDB Data Team • 03/16/2026
The stored cross-site scripting vulnerability identified as CVE-2022-24585 resides within the PluXml content management system version 5.8.7, specifically within the administrative comment handling component at /core/admin/comment.php. This vulnerability represents a critical security flaw that enables attackers to inject malicious scripts into the system's comment management interface, creating a persistent threat vector that can affect all users interacting with the affected administrative functionality. The vulnerability is classified as a stored XSS attack because the malicious payload is permanently stored within the application's database and subsequently executed whenever users view the compromised comment data. The attack occurs when an attacker crafts a malicious payload and submits it through the author parameter of the comment.php endpoint, which fails to properly sanitize or escape user input before rendering it in the web interface.
The technical implementation of this vulnerability stems from inadequate input validation and output sanitization mechanisms within the comment.php administrative component. When the system processes comments submitted through the administrative interface, it does not sufficiently filter or escape special characters and script tags that could be embedded within the author parameter. This failure to implement proper security controls allows attackers to inject HTML and JavaScript code that gets stored in the database and executed in the context of other users' browsers when they access the affected comment data. The vulnerability operates under CWE-79 which specifically addresses Cross-Site Scripting flaws in web applications, and aligns with ATT&CK technique T1566.001 for initial access through spearphishing attachments or links. The stored nature of this vulnerability means that the malicious code persists even after the initial injection, making it particularly dangerous as it can affect multiple users over extended periods without requiring repeated exploitation attempts.
The operational impact of this vulnerability extends beyond simple script execution, as it provides attackers with the capability to perform various malicious activities through compromised user sessions. An attacker could potentially steal session cookies, redirect users to malicious websites, deface the administrative interface, or even escalate privileges within the application if the administrative user's browser context is compromised. The vulnerability affects the entire PluXml administrative ecosystem since it targets the core comment management functionality that administrators and users interact with regularly. The stored nature of the XSS payload means that the attack can persist for extended periods, potentially allowing attackers to maintain access and execute commands over time. This vulnerability particularly impacts organizations using PluXml for content management, as it provides a direct path for attackers to compromise the administrative interface and potentially gain full control over the website's content management capabilities.
Mitigation strategies for CVE-2022-24585 should prioritize immediate patching of the PluXml application to version 5.8.8 or later, which contains the necessary security fixes for the XSS vulnerability. Organizations should implement comprehensive input validation and output encoding mechanisms throughout the application, ensuring that all user-supplied data is properly sanitized before being stored or rendered in web interfaces. The implementation of Content Security Policy (CSP) headers can provide additional defense-in-depth measures by restricting the sources from which scripts can be executed within the application context. Security teams should conduct thorough penetration testing and code reviews to identify similar vulnerabilities in other components of the PluXml application or any custom extensions that may be present. Network-based intrusion detection systems should be configured to monitor for suspicious patterns of activity that might indicate exploitation attempts, particularly around the comment submission and viewing endpoints. Regular security assessments and vulnerability scanning should be performed to maintain awareness of potential threats and ensure that all security controls remain effective against evolving attack vectors.