CVE-2018-17426 in WUZHI
Summary
by MITRE
WUZHI CMS 4.1.0 has stored XSS via the "Extension module" "SMS in station" field under the index.php?m=core URI.
VulDB is the best source for vulnerability data and more expert information about this specific topic.
Analysis
by VulDB Data Team • 05/05/2025
The vulnerability CVE-2018-17426 represents a critical stored cross-site scripting flaw within WUZHI CMS version 4.1.0 that specifically targets the "Extension module" functionality, particularly the "SMS in station" field. This vulnerability exists within the administrative interface at the index.php?m=core URI, making it accessible to authenticated users with appropriate privileges. The flaw allows attackers to inject malicious JavaScript code into the system's database through the SMS field, which then executes whenever the affected content is rendered to users. This stored nature of the vulnerability means that the malicious payload persists in the database and affects multiple users without requiring repeated exploitation attempts.
The technical implementation of this vulnerability stems from inadequate input validation and output sanitization within the CMS's core module handling system. When administrators or users input data into the SMS field without proper sanitization, the system stores the raw input directly into the database without appropriate encoding or filtering mechanisms. The CWE-79 classification applies here as this represents a classic stored cross-site scripting vulnerability where malicious code is stored on the target server and executed in the context of other users' browsers. The attack vector specifically leverages the administrative interface where legitimate users with access to the core module functionality can inadvertently or maliciously introduce malicious scripts that persist in the system.
The operational impact of this vulnerability extends beyond simple script execution, as it provides attackers with the ability to hijack user sessions, steal sensitive information, perform unauthorized actions within the CMS, and potentially escalate privileges. The stored nature means that once exploited, the malicious code will affect all users who view the affected content, including administrators, making it particularly dangerous for content management systems where multiple users interact with the same database. The vulnerability affects the integrity and confidentiality of the entire CMS ecosystem, as it can be used to establish persistent backdoors, exfiltrate user credentials, or manipulate content in ways that compromise the system's security posture.
Mitigation strategies for CVE-2018-17426 should focus on immediate patching of the WUZHI CMS to version 4.1.1 or later, which contains the necessary fixes for the input validation issues. Organizations should implement strict input sanitization and output encoding mechanisms throughout the CMS, particularly for fields that accept user-generated content. The principle of least privilege should be enforced by restricting administrative access to only necessary personnel and implementing multi-factor authentication. Additionally, regular security audits should be conducted to identify similar vulnerabilities in other modules and ensure proper validation of all user inputs. The ATT&CK framework's T1548.001 technique for privilege escalation and T1071.001 for application layer protocol usage should be monitored as potential indicators of exploitation attempts. Network segmentation and web application firewalls can provide additional defense-in-depth measures to detect and prevent exploitation attempts while the primary patching efforts are underway.