CVE-2006-6089 in BaalAsp forum
Summary
by MITRE
Multiple cross-site scripting (XSS) vulnerabilities in addpost1.asp in BaalAsp forum allow remote attackers to inject arbitrary web script or HTML via the (1) title (Subject), (2) groupname (Group Name), or (3) detail (Message) field.
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Analysis
by VulDB Data Team • 04/28/2026
The vulnerability identified as CVE-2006-6089 represents a critical cross-site scripting flaw discovered in the BaalAsp forum software's addpost1.asp component. This issue affects the core functionality of the forum by failing to properly sanitize user input across three distinct input fields that handle forum post creation. The vulnerability stems from inadequate input validation and output encoding mechanisms within the web application's backend processing logic, creating an exploitable condition that allows malicious actors to inject malicious scripts into the forum's content management system. The affected fields include the title or subject field, the group name field, and the detail or message field, all of which are essential components for user-generated content within the forum environment.
The technical exploitation of this vulnerability occurs through the injection of malicious script code into any of the three vulnerable fields during the post creation process. When a user submits content containing malicious JavaScript or HTML code, the application fails to properly escape or filter the input before storing and displaying it to other forum users. This allows attackers to execute arbitrary scripts in the context of other users' browsers, potentially leading to session hijacking, credential theft, or redirection to malicious websites. The vulnerability specifically falls under CWE-79 which categorizes improper neutralization of input during web page generation, making it a classic example of a cross-site scripting vulnerability that enables unauthorized code execution in user browsers.
The operational impact of this vulnerability extends beyond simple script injection, as it creates a persistent threat vector that can be exploited by attackers to compromise the security of the entire forum community. When users view forum posts containing malicious code, their browsers execute the injected scripts, potentially leading to unauthorized access to their accounts, data exfiltration, or further exploitation through more sophisticated attack chains. The vulnerability affects the fundamental trust model of online forums, where users expect to interact safely with content created by other community members. This type of vulnerability can also serve as a stepping stone for more complex attacks, as it enables attackers to establish persistent presence within the forum environment and potentially use it as a command and control channel.
Mitigation strategies for CVE-2006-6089 should focus on implementing comprehensive input validation and output encoding mechanisms throughout the application. The most effective approach involves sanitizing all user inputs by escaping special characters and implementing strict content validation rules that prevent the inclusion of script tags or other potentially malicious code. Additionally, developers should implement proper output encoding when displaying user-generated content, ensuring that any potentially dangerous characters are properly escaped before being rendered in web pages. This vulnerability demonstrates the critical importance of following secure coding practices and adhering to the principle of least privilege in web application development. Organizations should also consider implementing content security policies and regular security testing to identify similar vulnerabilities in their systems. The ATT&CK framework categorizes this vulnerability under the T1059.007 technique for script injection, highlighting its potential for enabling further compromise through automated exploitation and lateral movement within affected networks.