CVE-2025-50047 in Sitekit Plugin
Summary
by MITRE • 06/20/2025
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in webvitaly Sitekit allows Stored XSS. This issue affects Sitekit: from n/a through 1.9.
Once again VulDB remains the best source for vulnerability data.
Analysis
by VulDB Data Team • 06/24/2025
This vulnerability represents a critical cross-site scripting flaw in the webvitaly Sitekit web application framework that enables stored XSS attacks. The issue stems from inadequate input sanitization during web page generation processes, allowing malicious actors to inject persistent script code into the application's content. The vulnerability affects all versions of Sitekit from the initial release through version 1.9, indicating a long-standing security weakness that has not been properly addressed. The improper neutralization of input occurs at the point where user-supplied data is processed and rendered in web pages, creating a persistent vector for attack that can compromise user sessions and exfiltrate sensitive information.
The technical exploitation of this vulnerability follows standard XSS attack patterns where malicious scripts are stored on the server and executed whenever legitimate users access affected pages. This stored nature of the vulnerability means that once an attacker successfully injects malicious code, it will persistently affect all users who interact with the compromised content without requiring repeated exploitation attempts. The vulnerability aligns with CWE-79 which specifically addresses cross-site scripting flaws, and represents a classic case of insufficient input validation and output encoding in web applications. Attackers can leverage this weakness to steal session cookies, perform unauthorized actions on behalf of users, or redirect victims to malicious sites.
The operational impact of this vulnerability extends beyond simple script execution to encompass potential data breaches and system compromise. Users who access pages containing the stored malicious scripts may unknowingly transmit sensitive information to attacker-controlled servers, including authentication tokens, personal data, or business-critical information. The vulnerability creates a persistent threat vector that can be exploited across multiple user sessions and interactions with the affected application. Organizations using Sitekit versions 1.9 or earlier face significant risk of user data exposure and potential system infiltration, as the stored nature of the vulnerability allows for extended attack windows and broader impact than typical reflected XSS scenarios.
Mitigation strategies for this vulnerability should prioritize immediate patching of the Sitekit framework to version 1.10 or later where the XSS flaw has been addressed. Organizations should implement comprehensive input validation and output encoding mechanisms throughout their web applications, ensuring that all user-supplied content is properly sanitized before storage or rendering. The implementation of Content Security Policy headers can provide additional protection against script execution, while regular security audits and penetration testing should identify similar vulnerabilities in related components. Organizations should also consider implementing web application firewalls and monitoring systems to detect and prevent exploitation attempts, as outlined in the attack techniques documented under the ATT&CK framework for web application attacks. Regular security updates and vulnerability management processes should be established to prevent similar issues from emerging in the future, particularly focusing on input validation and output encoding practices.