CVE-2025-62429 is a code injection vulnerability classified under CWE-94 affecting ClipBucket v5, an open-source video sharing platform. The vulnerability exists in the /upload/admin_area/actions/update_launch.php script, where the 'type' parameter from a POST request is embedded directly into PHP tags and executed without proper sanitization or validation. This flaw allows an attacker with authenticated access and high privileges to inject arbitrary PHP code, leading to remote code execution (RCE). The vulnerability is exploitable remotely over the network without user interaction but requires the attacker to have elevated privileges, such as an administrator or a user with access to the admin area. The CVSS 3.1 base score is 7.2, reflecting high severity due to the potential for full system compromise, including confidentiality, integrity, and availability impacts. The vulnerability was publicly disclosed on October 20, 2025, and fixed in ClipBucket v5.5.2 #147. No public exploits have been reported yet, but the nature of the vulnerability makes it a critical risk for affected deployments. Attackers exploiting this vulnerability could execute arbitrary PHP commands, potentially leading to data theft, defacement, or complete server takeover. The vulnerability highlights the risks of improper input handling and dynamic code execution in web applications, especially those exposed to the internet and used in media sharing contexts.

For European organizations, the impact of CVE-2025-62429 can be significant, particularly for those operating video sharing platforms or services based on ClipBucket v5. Successful exploitation can lead to full system compromise, allowing attackers to steal sensitive user data, manipulate or delete video content, disrupt service availability, or use the compromised server as a pivot point for further attacks within the network. This can result in reputational damage, regulatory penalties under GDPR due to data breaches, and operational downtime. The requirement for authenticated high-privilege access somewhat limits the attack surface but does not eliminate risk, as insider threats or compromised credentials could be leveraged. Organizations in sectors such as media, education, and entertainment that rely on ClipBucket for content delivery are particularly vulnerable. Additionally, the ability to execute arbitrary PHP code can facilitate the deployment of malware or ransomware, further amplifying the potential damage.

The primary mitigation is to upgrade ClipBucket v5 installations to version 5.5.2 #147 or later, where the vulnerability is patched. Organizations should audit their current ClipBucket deployments to identify affected versions. Restrict access to the /upload/admin_area/actions/update_launch.php endpoint to trusted administrators only, using network segmentation and access control lists. Implement strong authentication mechanisms and monitor for unusual administrative activity to detect potential exploitation attempts. Employ web application firewalls (WAFs) with custom rules to detect and block suspicious POST requests targeting the 'type' parameter. Conduct regular code reviews and security testing to identify similar injection flaws. Additionally, enforce the principle of least privilege for user accounts to minimize the risk posed by compromised credentials. Maintain up-to-date backups and incident response plans to quickly recover from potential compromises.