An authorization bypass vulnerability in World Wide Broadcast Network AVideo allows authenticated users to perform unauthorized file uploads, potentially leading to content manipulation.

The application fails to perform proper ownership validation when processing comment image uploads. While the endpoint correctly verifies that an attacker is authenticated, it lacks the necessary checks to ensure the user has permission to modify the specific video object, resulting in an authorization bypass (CWE-639).

Successful exploitation of this vulnerability allows unauthorized users to modify video comment sections by uploading arbitrary images. This can lead to the defacement of user content, the hosting of malicious or inappropriate imagery on company infrastructure, and a significant loss of integrity for the platform. Given the CVSS score of 8.8, this flaw represents a high-severity risk that could damage the reputation of the organization and impact the trust of the user base.

Immediate Action: Update the AVideo installation to version 20.1 or later immediately to incorporate the necessary ownership validation checks.

Proactive Monitoring: Monitor web server access logs for anomalous POST requests directed at comment upload endpoints, specifically looking for users attempting to interact with video IDs not associated with their account.

Compensating Controls: Implement a Web Application Firewall (WAF) rule to inspect and restrict file uploads to comment-related endpoints, ensuring that only expected file types are processed and limiting the rate of upload attempts.

Public Exploit Available: No (exploit_available: false)

Organizations utilizing the AVideo platform must prioritize upgrading to version 20.1 to mitigate this authorization flaw. Failure to apply this update leaves the system vulnerable to unauthorized content injection, which could be leveraged to degrade the platform integrity. Security teams should ensure that all instances are patched and that access controls are verified following the update.