CVE-2002-2129 in w-Agora
Summary
by MITRE
Cross-site scripting vulnerability (XSS) in editform.php for w-Agora 4.1.5 allows remote attackers to execute arbitrary web script via an arbitrary form field name containing the script, which is echoed back to the user when displaying the form.
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Analysis
by VulDB Data Team • 08/30/2025
The vulnerability identified as CVE-2002-2129 represents a critical cross-site scripting flaw in the w-Agora 4.1.5 web application's editform.php component. This vulnerability falls under the CWE-79 category of Cross-Site Scripting, specifically manifesting as an input validation weakness where user-supplied data is not properly sanitized before being rendered back to users. The flaw exists in the form processing logic where arbitrary form field names containing malicious script code are accepted and subsequently echoed back to users without adequate sanitization or encoding mechanisms. Attackers can exploit this vulnerability by crafting specially designed form field names that contain executable JavaScript code, which then gets reflected in the displayed form, creating a persistent XSS vector.
The operational impact of this vulnerability is significant as it enables remote attackers to execute arbitrary web scripts within the context of authenticated users' browsers. When a victim accesses a page containing the maliciously crafted form field, the embedded script executes in their browser session, potentially leading to session hijacking, credential theft, or redirection to malicious websites. The vulnerability is particularly dangerous because it operates at the form field level, meaning any form field name submitted to the editform.php script can serve as an attack vector, making it difficult to implement comprehensive defenses without addressing the root cause. This type of vulnerability aligns with ATT&CK technique T1566.001 for initial access through malicious content and T1059.007 for command and scripting interpreter.
The technical exploitation requires minimal prerequisites as attackers only need to submit a form with a malicious field name to the vulnerable application. The attack is facilitated by the application's failure to implement proper output encoding or sanitization of user inputs before rendering them in HTML contexts. This weakness creates a persistent threat where attackers can embed malicious scripts that execute whenever the affected form is displayed to users. The vulnerability demonstrates poor input validation practices and highlights the importance of implementing secure coding practices that prevent the injection of untrusted data into web application outputs. Mitigation strategies should focus on implementing proper input sanitization, output encoding, and content security policies to prevent the execution of unauthorized scripts in user contexts. Organizations should also consider implementing web application firewalls and regular security assessments to identify similar vulnerabilities in legacy web applications.