CVE-2025-34438 is an insecure direct object reference (IDOR) vulnerability classified under CWE-639, affecting AVideo versions prior to 20.1 developed by World Wide Broadcast Network. The vulnerability allows any user with upload permissions to modify the rotation metadata of any video hosted on the platform, regardless of whether they own or manage the video. The root cause is that the API endpoint responsible for updating video rotation metadata only checks if the user has upload capability but fails to verify if the user has ownership or management rights over the specific video resource. This authorization bypass flaw enables unauthorized users to alter video metadata, potentially causing content misrepresentation or disruption. The vulnerability has a CVSS 4.0 score of 5.3, reflecting medium severity with network attack vector, low attack complexity, no privileges required beyond upload rights, and no user interaction needed. The impact on confidentiality is limited, but integrity and availability could be affected due to unauthorized modifications. There are no known exploits in the wild at the time of publication, and no patches have been linked yet. Organizations using AVideo should prioritize access control reviews and prepare to deploy fixes once available.

For European organizations, the impact primarily concerns the integrity and availability of video content hosted on AVideo platforms. Unauthorized modification of video rotation metadata could lead to misaligned or improperly displayed videos, degrading user experience and potentially damaging brand reputation. In sectors relying on video content for communication, marketing, or training, this could disrupt operations or cause misinformation. While confidentiality impact is low, the integrity breach could be exploited to undermine trust in the platform. Organizations with multiple users having upload permissions face higher risk. Additionally, if attackers combine this vulnerability with other flaws, it could facilitate broader content manipulation or denial of service. The absence of known exploits reduces immediate risk, but proactive mitigation is essential to prevent future exploitation.

European organizations should implement the following specific mitigations: 1) Immediately audit and restrict upload permissions to only trusted users who require them. 2) Implement or enforce strict authorization checks on the backend to verify that users modifying video metadata are the rightful owners or have explicit management rights over the video. 3) Monitor API endpoints for unusual metadata modification requests, especially those targeting videos not owned by the requester. 4) Deploy web application firewalls (WAFs) with custom rules to detect and block unauthorized attempts to modify video metadata. 5) Engage with the vendor or community to obtain and apply patches or updates addressing this vulnerability as soon as they become available. 6) Educate users with upload rights about the risks and encourage reporting of suspicious activity. 7) Consider implementing logging and alerting mechanisms specifically for metadata changes to enable rapid incident response.