CVE-2002-0590 in IcrediBB
Summary
by MITRE
Cross-site scripting (CSS) vulnerability in IcrediBB 1.1 Beta allows remote attackers to execute arbitrary script and steal cookies as other IcrediBB users via the (1) title or (2) body of posts.
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Analysis
by VulDB Data Team • 09/15/2025
The vulnerability identified as CVE-2002-0590 represents a critical cross-site scripting flaw within the IcrediBB 1.1 Beta forum software, classified under CWE-79 - Improper Neutralization of Input During Web Page Generation. This vulnerability exists in the handling of user-generated content within the forum's posting functionality, specifically affecting both the title and body fields of forum posts. The flaw stems from inadequate input validation and output encoding mechanisms that fail to properly sanitize user-supplied data before it is rendered back to other users within the web interface.
The technical exploitation of this vulnerability occurs when remote attackers craft malicious script code within the title or body fields of forum posts. When other users view these posts, the malicious scripts execute in their browsers within the context of the vulnerable forum application. This allows attackers to perform actions such as stealing session cookies, redirecting users to malicious sites, defacing the forum interface, or conducting more sophisticated attacks like session hijacking. The vulnerability is particularly dangerous because it leverages the trust relationship between users and the forum application, enabling attackers to exploit the legitimate user sessions of other forum participants.
The operational impact of this vulnerability extends beyond simple script execution, creating significant security implications for forum administrators and users alike. Users may unknowingly become compromised when viewing malicious posts, potentially leading to unauthorized access to their accounts, data theft, and further propagation of attacks within the forum community. Forum administrators face the challenge of maintaining user trust while dealing with the potential for widespread client-side attacks across their user base. The vulnerability also creates opportunities for attackers to perform account takeover operations, deface the forum content, or use the platform as a vector for phishing attacks against other users.
Mitigation strategies for this vulnerability must address the core input sanitization issues within the IcrediBB application. Immediate remediation involves implementing proper output encoding for all user-generated content, particularly when displaying data within HTML contexts. This includes applying HTML entity encoding to special characters and implementing strict input validation that rejects or sanitizes potentially malicious content. Organizations should consider implementing Content Security Policy (CSP) headers to limit script execution and prevent unauthorized code from running within the forum environment. The vulnerability also highlights the importance of regular security assessments and input validation testing, as recommended by the OWASP Top Ten and ATT&CK framework categories related to web application security. Patch management becomes crucial, as this vulnerability affects a specific version of the software and requires upgrading to a patched release that properly addresses the cross-site scripting flaws in the posting functionality.