CVE-2025-24573 in PageLayer Plugin
Summary
by MITRE • 01/24/2025
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in Pagelayer Team PageLayer allows DOM-Based XSS. This issue affects PageLayer: from n/a through 1.9.4.
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Analysis
by VulDB Data Team • 02/09/2025
The vulnerability identified as CVE-2025-24573 represents a critical cross-site scripting weakness within the PageLayer content management system that specifically targets the DOM-based execution environment. This flaw enables malicious actors to inject arbitrary JavaScript code into web pages generated by the platform, creating a persistent threat vector that can compromise user sessions and data integrity. The vulnerability manifests during the web page generation process where input parameters are not properly sanitized or neutralized before being rendered in the browser environment. This particular implementation affects all versions of PageLayer from the initial release through version 1.9.4, indicating a long-standing issue that has persisted across multiple iterations of the software.
The technical exploitation of this DOM-based XSS vulnerability occurs when the application fails to adequately validate or escape user-supplied input that is subsequently incorporated into dynamic web page content. When users interact with the PageLayer interface or when content is generated based on user parameters, the system does not implement proper input sanitization mechanisms to prevent malicious script execution. This weakness falls under the CWE-79 category of Cross-Site Scripting, specifically targeting the DOM-based variant where the vulnerability exists in the client-side JavaScript rather than in server-side code execution. The attack vector leverages the browser's Document Object Model to execute malicious scripts, making it particularly challenging to detect and mitigate through traditional server-side security measures.
The operational impact of this vulnerability extends beyond simple script injection, creating potential pathways for session hijacking, credential theft, and data exfiltration. An attacker could craft malicious URLs or content that, when viewed by authenticated users, would execute unauthorized commands within their browser context. This includes the potential to steal cookies, modify page content, redirect users to malicious sites, or harvest sensitive information from the affected web application. The persistence of this vulnerability across multiple versions suggests that the underlying architectural flaw in input handling has not been adequately addressed, leaving users exposed to ongoing risk. The attack surface is particularly concerning given that PageLayer is a content management platform that likely handles sensitive user data and administrative functions.
Mitigation strategies for this vulnerability should focus on implementing comprehensive input validation and output encoding mechanisms throughout the application's data flow. Security measures must include proper sanitization of all user-supplied input before it is processed or rendered in web pages, with particular attention to parameters that are directly incorporated into JavaScript execution contexts. The implementation of Content Security Policy headers can provide an additional layer of protection against unauthorized script execution, while proper encoding of dynamic content ensures that potentially malicious input cannot be interpreted as executable code. Organizations should immediately update to patched versions of PageLayer where available, and consider implementing web application firewalls to monitor and block suspicious input patterns. Regular security auditing of input handling mechanisms and comprehensive testing of web application defenses should be conducted to prevent similar vulnerabilities from emerging in the future, aligning with established security frameworks that emphasize the importance of input validation and output encoding as fundamental defense mechanisms against XSS attacks.