CVE-2024-1636 in Sitefinity
Summary
by MITRE • 02/28/2024
Potential Cross-Site Scripting (XSS) in the page editing area.
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Analysis
by VulDB Data Team • 05/08/2026
Cross-site scripting vulnerabilities represent one of the most pervasive and dangerous web application security flaws, with the potential to compromise user sessions and execute malicious code within the context of a victim's browser. This particular vulnerability manifests within the page editing area of a web application, creating a critical attack surface that adversaries can exploit to inject malicious scripts into web pages viewed by other users. The flaw typically occurs when user-supplied input is not properly sanitized or validated before being rendered back to the browser, allowing attackers to embed script code that executes in the context of other users' sessions. The vulnerability's impact is amplified when the editing area processes content without adequate output encoding or sanitization mechanisms, particularly when dealing with HTML content, JavaScript, or other executable code fragments. According to the CWE database, this vulnerability maps directly to CWE-79 which describes improper neutralization of input during web page generation, specifically highlighting the dangerous combination of user-controllable data being directly incorporated into dynamic web content without proper validation or encoding.
The operational impact of this XSS vulnerability extends far beyond simple script injection, as it can enable attackers to steal session cookies, perform unauthorized actions on behalf of users, redirect victims to malicious sites, or even escalate privileges within the application. When an attacker successfully exploits this vulnerability in a page editing context, they can inject malicious scripts that execute in the victim's browser, potentially leading to complete account compromise, data exfiltration, or the establishment of persistent backdoors. The attack vector typically involves crafting malicious input that appears legitimate within the editing interface but contains embedded script code that gets executed when other users view the affected page. This vulnerability aligns with multiple ATT&CK techniques including T1566 for spearphishing with a malicious attachment and T1059 for command and scripting interpreter, as attackers can leverage the XSS to establish further attack vectors within the compromised environment. The severity of this vulnerability is particularly concerning in content management systems, wikis, or collaborative editing platforms where users frequently contribute content and the editing interface may not adequately validate or sanitize user inputs.
Mitigation strategies for this vulnerability must address both the immediate input validation and the broader security architecture of the application. The most effective approach involves implementing comprehensive input sanitization and output encoding mechanisms, ensuring that all user-supplied data is properly escaped or filtered before being rendered in the browser context. This includes implementing Content Security Policy (CSP) headers to restrict script execution, employing proper HTML encoding for dynamic content, and utilizing secure coding practices such as parameterized queries and input validation libraries. The application should also implement strict sanitization of HTML content within editing areas, potentially using libraries like DOMPurify or similar HTML sanitizers to remove dangerous elements while preserving legitimate formatting. Additionally, implementing proper access controls and privilege separation within the editing interface can limit the damage potential of a successful XSS attack, ensuring that even if an attacker gains code execution capabilities, they cannot escalate privileges or access sensitive areas of the application. Regular security testing including automated scanning and manual penetration testing should be conducted to identify and remediate similar vulnerabilities across the entire application stack, as XSS flaws often exist in multiple components and can be introduced through various code paths within complex web applications.