CVE-2024-26482 in Kirby
Summary
by MITRE • 02/22/2024
An HTML injection vulnerability in the Edit Content Layout module of Kirby CMS v4.1.0 allows attackers to execute arbitrary code via a crafted payload.
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Analysis
by VulDB Data Team • 04/18/2025
The HTML injection vulnerability identified as CVE-2024-26482 resides within the Edit Content Layout module of Kirby CMS version 4.1.0, representing a critical security flaw that enables attackers to execute arbitrary code through maliciously crafted payloads. This vulnerability directly impacts the content management system's ability to safely process user inputs, creating a pathway for remote code execution that could compromise entire web applications. The flaw exists in the module responsible for editing content layouts, where insufficient input validation and sanitization allows malicious HTML content to be injected and subsequently executed within the application context.
This vulnerability falls under the CWE-79 category of Cross-Site Scripting (XSS) and specifically represents a server-side HTML injection attack vector that bypasses standard client-side security measures. The attack exploits the lack of proper content sanitization within the Edit Content Layout functionality, allowing attackers to inject malicious scripts that can execute with the privileges of the web application. The vulnerability is particularly dangerous because it operates at the content editing level, meaning that authenticated users with access to the content management interface could potentially leverage this flaw to escalate their privileges or inject malicious code that affects all users of the CMS.
The operational impact of CVE-2024-26482 extends beyond simple script execution, as it creates opportunities for attackers to perform a wide range of malicious activities including data exfiltration, session hijacking, and persistent backdoor installation. The vulnerability enables attackers to inject HTML content that can trigger cross-site scripting attacks, potentially leading to complete system compromise. According to ATT&CK framework, this vulnerability maps to T1566 (Phishing) and T1059 (Command and Scripting Interpreter) techniques, as attackers can use the injected HTML to redirect users to malicious sites or execute commands on the server. The affected environment becomes vulnerable to various attack vectors including credential theft, data manipulation, and unauthorized access to sensitive information stored within the CMS.
Organizations utilizing Kirby CMS v4.1.0 should immediately implement mitigations including input validation and sanitization measures, access control restrictions, and comprehensive monitoring of content editing activities. The recommended approach involves updating to the latest version of Kirby CMS where this vulnerability has been patched, implementing strict content filtering mechanisms, and establishing robust security monitoring procedures to detect unauthorized content modifications. Security teams should also consider implementing web application firewalls and content security policies to prevent unauthorized HTML injection attempts. Additionally, regular security audits and penetration testing should be conducted to identify similar vulnerabilities within the application's codebase and ensure that all user inputs are properly validated and sanitized before processing. The vulnerability demonstrates the critical importance of input validation in content management systems and highlights the need for comprehensive security practices throughout the software development lifecycle to prevent such flaws from reaching production environments.