CVE-2024-11491 in 115cms
Summary
by MITRE • 11/20/2024
A vulnerability was found in 115cms up to 20240807. It has been rated as problematic. Affected by this issue is some unknown functionality of the file /index.php/admin/web/useradmin.html. The manipulation of the argument ks leads to cross site scripting. The attack may be launched remotely. The exploit has been disclosed to the public and may be used. The vendor was contacted early about this disclosure but did not respond in any way.
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Analysis
by VulDB Data Team • 11/06/2025
This vulnerability exists in the 115cms content management system version 20240807 and earlier, representing a significant security flaw that allows attackers to execute cross-site scripting attacks through the administrative interface. The issue specifically affects the /index.php/admin/web/useradmin.html file where the ks parameter is improperly handled, creating an avenue for malicious code injection that can compromise user sessions and potentially escalate privileges within the administrative environment. The vulnerability has been publicly disclosed and is actively exploitable, indicating that threat actors have already developed working exploits for this weakness.
The technical flaw stems from insufficient input validation and output sanitization of the ks parameter within the administrative user management interface. When user-supplied data is directly incorporated into web page responses without proper encoding or validation, it creates an XSS vulnerability that allows attackers to inject malicious scripts into web pages viewed by other users. This particular implementation flaw enables attackers to manipulate the ks parameter to inject arbitrary JavaScript code that executes in the context of authenticated admin sessions, potentially leading to complete system compromise.
The operational impact of this vulnerability is severe given that it affects the administrative interface of the CMS, which typically contains sensitive configuration data and user management capabilities. An attacker who successfully exploits this vulnerability could gain unauthorized access to administrative functions, modify user accounts, inject malicious content into the website, or potentially escalate privileges to full system control. The remote exploitation capability means that attackers do not need physical access to the system or network to exploit this weakness, making it particularly dangerous for publicly accessible web applications.
Security professionals should immediately implement mitigations including input validation and output encoding for all parameters used in administrative interfaces, particularly those related to user management functions. The recommended approach involves implementing proper sanitization of the ks parameter through the use of context-appropriate encoding techniques such as HTML entity encoding for output contexts. Additionally, implementing content security policies and using secure coding practices that prevent direct parameter injection into web responses would significantly reduce the risk of exploitation. Organizations should also consider implementing web application firewalls to detect and block malicious requests targeting this specific vulnerability.
This vulnerability aligns with CWE-79 which defines Cross-Site Scripting as a common weakness in web applications where untrusted data is incorporated into web pages without proper validation or encoding. The attack pattern follows the typical exploitation methodology described in the MITRE ATT&CK framework under the T1059.007 technique for command and control through scripting languages, where attackers leverage XSS vulnerabilities to execute malicious JavaScript in victim browsers. The lack of vendor response to early disclosure attempts is particularly concerning as it indicates potential delays in patch development or deployment that leave systems exposed to active exploitation. Organizations should maintain awareness of publicly disclosed vulnerabilities and ensure timely patch management processes are in place to address such security weaknesses before they can be effectively exploited by malicious actors in the broader threat landscape.