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Vulnerability record · CVE-2025-21624 · published 7 January 2025

CVE-2025-21624: Oxygenz clipbucket unrestricted file upload vulnerability

OOxygenz · Clipbucket

ClipBucket V5 provides open source video hosting with PHP. Prior to 5.5.1 - 239, a file upload vulnerability exists in the Manage Playlist functionality of the application, specifically surrounding the uploading of playlist cover images. Without proper checks, an attacker can upload a PHP script file instead of an image file, thus allowing a webshell or other malicious files to be stored and executed on the server. This attack vector exists in both the admin area and low-level user area. This vulnerability is fixed in 5.5.1 - 239.

9.8 CVSS 3.1 Critical EPSS 1.2% · top 33.1% CWE-434 · Unrestricted file upload
9.8CVSS 3.1 base score
1.2%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
3References, 2 tagged exploit
17 Jun 2026Last modified by NVD

Description

ClipBucket V5 provides open source video hosting with PHP. Prior to 5.5.1 - 239, a file upload vulnerability exists in the Manage Playlist functionality of the application, specifically surrounding the uploading of playlist cover images. Without proper checks, an attacker can upload a PHP script file instead of an image file, thus allowing a webshell or other malicious files to be stored and executed on the server. This attack vector exists in both the admin area and low-level user area. This vulnerability is fixed in 5.5.1 - 239.

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://github.com/MacWarrior/clipbucket-v5/commit/893bfb0f1236c4a59b5e2843ab8d27a1e491b12b Patch
https://github.com/MacWarrior/clipbucket-v5/security/advisories/GHSA-98vm-2xqm-xrcc ExploitVendor Advisory
https://github.com/MacWarrior/clipbucket-v5/security/advisories/GHSA-98vm-2xqm-xrcc ExploitVendor Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2025-21624), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.