CVE-2019-9647 in Gila
Summary
by MITRE
Gila CMS 1.9.1 has XSS.
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Analysis
by VulDB Data Team • 08/23/2025
Gila CMS version 1.9.1 contains a cross-site scripting vulnerability that allows remote attackers to inject malicious scripts into web pages viewed by other users. This vulnerability exists due to insufficient input validation and output encoding mechanisms within the content management system's user interface and administrative panels. The flaw specifically affects the way the application processes and renders user-supplied data, creating an opportunity for attackers to execute arbitrary JavaScript code in the context of a victim's browser session. The vulnerability impacts both authenticated and unauthenticated users, making it particularly dangerous as it can be exploited by anyone who can submit content or interact with the CMS interface. This issue falls under CWE-79 - Improper Neutralization of Input During Web Page Generation, which is a fundamental weakness in web application security that has been consistently identified as one of the top ten web application security risks by the OWASP project.
The technical implementation of this vulnerability stems from inadequate sanitization of user inputs in various CMS components including article submission forms, comment sections, and administrative configuration panels. When users submit content containing malicious script tags or encoded payloads, the system fails to properly escape or filter these inputs before rendering them in HTML output. This allows attackers to inject javascript code that executes in the browser context of other users who view the affected pages. The vulnerability can be exploited through multiple vectors including blog posts, user comments, uploaded files, and administrative settings. Attackers can leverage this flaw to steal session cookies, perform unauthorized actions on behalf of users, redirect victims to malicious sites, or even establish persistent backdoors within the compromised environment. The attack surface is particularly broad given that CMS platforms typically serve as central repositories for website content and user data, making them attractive targets for cybercriminals seeking to gain unauthorized access to web applications.
The operational impact of this vulnerability extends beyond simple script execution, as it can enable more sophisticated attacks within the compromised environment. An attacker who successfully exploits this XSS vulnerability could potentially escalate their privileges, access sensitive administrative functions, or use the compromised system as a launching point for further attacks against the organization's infrastructure. The vulnerability also poses significant risks to user privacy and data integrity, as it allows for session hijacking and data exfiltration. From an ATT&CK perspective, this vulnerability maps to techniques such as T1059.007 - Command and Scripting Interpreter: JavaScript and T1566.001 - Phishing: Spearphishing Attachment, where attackers can use the XSS flaw to deliver malicious payloads that appear legitimate to end users. The vulnerability undermines the trust model of the CMS platform and can result in reputational damage, regulatory compliance violations, and potential legal consequences for organizations that fail to address such security weaknesses in their web applications.
Organizations should implement multiple layers of defense to mitigate the risks associated with this vulnerability. Immediate remediation includes applying the vendor-provided security patch or upgrading to a patched version of Gila CMS. Additionally, implementing proper input validation and output encoding mechanisms can help prevent similar issues in the future. Web Application Firewalls should be configured to detect and block suspicious script patterns in HTTP requests. Regular security assessments including automated scanning and manual penetration testing should be conducted to identify and remediate similar vulnerabilities. Input sanitization should be implemented using established libraries and frameworks that properly handle HTML encoding and script filtering. Organizations should also consider implementing Content Security Policies to limit the execution of inline scripts and restrict external resource loading. The vulnerability highlights the importance of secure coding practices and regular security updates in maintaining web application integrity. Organizations must maintain awareness of security advisories and promptly apply patches to reduce their attack surface and protect against known exploitation techniques.