CVE-2024-33210 in flatpress
Summary
by MITRE • 10/02/2024
A cross-site scripting (XSS) vulnerability has been identified in Flatpress 1.3. This vulnerability allows an attacker to inject malicious scripts into web pages viewed by other users.
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Analysis
by VulDB Data Team • 03/08/2025
The cross-site scripting vulnerability identified in Flatpress 1.3 represents a critical security flaw that undermines the integrity of web applications and user data protection. This vulnerability falls under the category of persistent XSS attacks where malicious scripts can be injected into web pages and executed in the context of other users' browsers. The flaw exists within the content management system's handling of user input, particularly when processing comments, posts, or other dynamic content that gets rendered on web pages without proper sanitization or encoding mechanisms.
This vulnerability enables attackers to execute malicious scripts in the browsers of unsuspecting users, potentially leading to session hijacking, credential theft, or redirection to malicious websites. The technical implementation of this flaw suggests that Flatpress 1.3 fails to properly escape or filter user-supplied data before rendering it in web pages, allowing attackers to inject script tags or other malicious code that gets executed when other users view the affected content. The vulnerability is particularly dangerous because it can be exploited through various vectors including user comments, contact forms, or any input field that accepts dynamic content without adequate security controls.
The operational impact of this vulnerability extends beyond simple script execution, as it can be leveraged for more sophisticated attacks within the context of the compromised web application. Attackers can exploit this flaw to steal cookies, session tokens, or other sensitive information from authenticated users, potentially leading to full account compromise or privilege escalation within the Flatpress environment. The vulnerability also creates opportunities for phishing attacks where users might be redirected to malicious sites or have their browser behavior manipulated through the injected scripts. This type of vulnerability is classified under CWE-79 as "Cross-site Scripting" and aligns with ATT&CK technique T1566.001 for "Phishing" and T1071.001 for "Application Layer Protocol: Web Protocols" in the enterprise attack framework.
Organizations using Flatpress 1.3 should immediately implement mitigations including input validation, output encoding, and proper content sanitization mechanisms to prevent script injection. The recommended approach involves implementing strict input filtering that removes or encodes potentially dangerous characters and implementing Content Security Policy headers to limit script execution. Additionally, administrators should ensure that all user-generated content is properly escaped before rendering and that the application follows secure coding practices. The vulnerability demonstrates the critical importance of input validation and output encoding in web applications, aligning with OWASP Top Ten security requirements and emphasizing the necessity of implementing proper security controls throughout the application development lifecycle. Regular security updates and patch management processes should be prioritized to address such vulnerabilities promptly and prevent exploitation by threat actors.