CVE-2023-1755 in phpmyfaq
Summary
by MITRE • 03/31/2023
Cross-site Scripting (XSS) - Generic in GitHub repository thorsten/phpmyfaq prior to 3.1.12.
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Analysis
by VulDB Data Team • 07/06/2025
The vulnerability identified as CVE-2023-1755 represents a cross-site scripting flaw discovered in the thorsten/phpmyfaq GitHub repository affecting versions prior to 3.1.12. This issue falls under the broader category of web application security vulnerabilities that can compromise user sessions and data integrity. The vulnerability manifests as a generic XSS flaw, indicating that the affected application fails to properly sanitize user input before rendering it within web pages. Such weaknesses in web applications create opportunities for attackers to inject malicious scripts that execute in the context of other users' browsers, potentially leading to session hijacking, data theft, or unauthorized actions performed on behalf of victims. The vulnerability is particularly concerning as it affects a widely used knowledge base management system that many organizations rely on for internal documentation and information sharing.
The technical implementation of this XSS vulnerability stems from insufficient input validation and output encoding mechanisms within the phpmyfaq application. When users submit data through various interface elements such as search fields, comment sections, or form inputs, the application does not adequately sanitize this data before incorporating it into HTML responses. This allows attackers to inject malicious JavaScript code through crafted input that gets executed when other users view the affected content. The generic nature of the vulnerability suggests that multiple input points within the application may be susceptible to this flaw, rather than being limited to a specific function or module. This broad exposure increases the attack surface and makes the vulnerability more difficult to fully remediate without comprehensive code review and input sanitization implementation.
The operational impact of CVE-2023-1755 extends beyond simple script execution, as it can enable sophisticated attack chains that leverage the compromised application to target other system components. Attackers can use this vulnerability to steal session cookies, redirect users to malicious sites, or modify the application interface to capture sensitive information. The vulnerability aligns with CWE-79 which specifically addresses cross-site scripting flaws in web applications. From an adversarial perspective, this vulnerability maps to ATT&CK technique T1531 which involves using malicious scripts to access and manipulate web applications. Organizations running affected versions of phpmyfaq face significant risk as attackers can exploit this vulnerability to gain unauthorized access to sensitive documentation, user credentials, or internal knowledge bases that the application typically protects. The impact is particularly severe in enterprise environments where phpmyfaq serves as a central repository for technical documentation and support information.
Mitigation strategies for CVE-2023-1755 must address the root cause through proper input validation and output encoding practices. Organizations should immediately upgrade to phpmyfaq version 3.1.12 or later, which contains the necessary patches to resolve the XSS vulnerability. Additionally, implementing comprehensive input sanitization measures, including the use of context-specific output encoding, can provide defense-in-depth protection. Security teams should conduct thorough code reviews to identify any other potential input handling issues within the application. The implementation of Content Security Policy headers can provide additional protection against XSS attacks by restricting script execution. Regular security testing including automated vulnerability scanning and manual penetration testing should be performed to ensure that similar vulnerabilities do not exist in other parts of the application. Organizations should also consider implementing web application firewalls to monitor and filter suspicious requests that may attempt to exploit XSS vulnerabilities. The remediation process should include comprehensive testing to ensure that the patch does not introduce any regressions in application functionality while effectively addressing the security concern.