CVE-2012-6642 in ClipBucket
Summary
by MITRE
Cross-site scripting (XSS) vulnerability in ClipBucket 2.6 allows remote attackers to inject arbitrary web script or HTML via the type parameter to view_channel.php. NOTE: the provenance of this information is unknown; the details are obtained solely from third party information.
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Analysis
by VulDB Data Team • 05/10/2026
The vulnerability identified as CVE-2012-6642 represents a critical cross-site scripting flaw within ClipBucket version 2.6, a popular open source video sharing platform. This security weakness specifically affects the view_channel.php script and occurs when the application fails to properly sanitize user input passed through the type parameter. The vulnerability creates an avenue for remote attackers to execute malicious web scripts or HTML code within the context of other users' browsers, potentially compromising the integrity and security of the entire platform. The issue stems from insufficient input validation and output encoding mechanisms that should have been implemented to prevent malicious code injection.
From a technical perspective, this XSS vulnerability operates by allowing attackers to manipulate the type parameter in view_channel.php to inject malicious payloads that will be executed when other users view the affected channel. The vulnerability's classification aligns with CWE-79, which specifically addresses Cross-site Scripting flaws in web applications. This weakness enables attackers to perform various malicious activities including session hijacking, credential theft, and redirection to malicious sites. The attack vector is particularly concerning as it requires minimal privileges and can be exploited through simple parameter manipulation, making it highly accessible to attackers with basic web exploitation knowledge.
The operational impact of this vulnerability extends beyond simple script injection, potentially enabling sophisticated attacks such as credential harvesting, session manipulation, and data exfiltration. Attackers could leverage this flaw to establish persistent access to user accounts, compromise sensitive information, or even use the platform as a launching point for broader attacks against other systems. The vulnerability's presence in a video sharing platform creates additional risks as users may be tricked into executing malicious code through seemingly legitimate channel content. Organizations relying on ClipBucket for video hosting services face significant exposure to user data breaches and potential regulatory compliance violations.
Security mitigation strategies for this vulnerability should include immediate implementation of proper input sanitization and output encoding mechanisms throughout the application. The recommended approach involves validating all user-supplied input parameters and applying appropriate HTML escaping before rendering any dynamic content. Organizations should also implement Content Security Policy headers to limit script execution and prevent unauthorized code injection. Additionally, regular security audits and penetration testing should be conducted to identify similar vulnerabilities in other components of the application. The remediation process should follow established security frameworks such as those recommended by the OWASP Top Ten project and should include comprehensive code review processes to prevent similar issues in future development cycles. This vulnerability demonstrates the critical importance of input validation and output encoding in web application security, particularly in platforms handling user-generated content where malicious input can be introduced through various submission points.