CVE-2023-37134 in EyouCMS
Summary
by MITRE • 07/06/2023
A stored cross-site scripting (XSS) vulnerability in the Basic Information module of eyoucms v1.6.3 allows attackers to execute arbitrary web scripts or HTML via a crafted payload.
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Analysis
by VulDB Data Team • 01/16/2026
The stored cross-site scripting vulnerability identified as CVE-2023-37134 resides within the Basic Information module of eyoucms version 1.6.3, representing a critical security flaw that enables attackers to inject malicious scripts into web applications. This vulnerability specifically affects the content management system's handling of user input within the basic information section, where unvalidated data is stored and subsequently rendered without proper sanitization. The flaw allows malicious actors to persistently inject XSS payloads that execute in the context of other users' browsers when they view affected content, creating a persistent threat vector that can compromise user sessions and data.
The technical implementation of this vulnerability stems from inadequate input validation and output encoding mechanisms within the eyoucms application framework. When administrators or users submit data through the Basic Information module, the system fails to properly sanitize or escape special characters in the submitted content before storing it in the database. This stored data is then retrieved and displayed without sufficient context-aware encoding, allowing malicious scripts to execute in the browser context of unsuspecting users. The vulnerability manifests as a classic stored XSS attack pattern where the malicious payload is stored server-side and executed when legitimate users access the affected pages. According to CWE-79, this vulnerability maps directly to the Common Weakness Enumeration's definition of Cross-Site Scripting, specifically the stored variant where the malicious script is permanently stored on the target server.
The operational impact of this vulnerability extends beyond simple script execution, potentially enabling attackers to perform session hijacking, steal sensitive user information, redirect users to malicious websites, or perform actions on behalf of authenticated users. An attacker could craft payloads that exploit the vulnerability to steal cookies, access user accounts, modify content, or even establish backdoor access to the compromised system. The persistence of stored XSS makes this vulnerability particularly dangerous as it can affect multiple users over extended periods without requiring repeated exploitation attempts. This threat vector aligns with ATT&CK technique T1531 which describes the use of malicious content to gain access to systems, and T1566 which covers social engineering tactics that can lead to credential compromise.
Mitigation strategies for CVE-2023-37134 should prioritize immediate patching of the eyoucms application to the latest version that addresses this vulnerability. Organizations should implement comprehensive input validation and output encoding mechanisms throughout the application, ensuring that all user-submitted content is properly sanitized before storage and rendering. The implementation of Content Security Policy headers can provide additional defense-in-depth measures to prevent script execution, while regular security audits and penetration testing should be conducted to identify similar vulnerabilities in other application modules. Security teams should also establish monitoring procedures to detect unusual data submissions that may indicate attempted exploitation of this vulnerability. The remediation process should include thorough testing to ensure that the patch does not introduce regressions in application functionality while maintaining the security posture of the entire eyoucms installation.