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CVE-2025-21624

Oxygenz Clipbucket unrestricted file upload

9.8 CRITICALPublic exploitEPSS 1.20%
  1. Published7 Jan 2025

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 breakdown

Attack vectorNetwork
Attack complexityLow
Privileges requiredNone
User interactionNone
ScopeUnchanged
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected products

Oxygenz Clipbucket≥ 5.3 < 5.5.1-239

Remediation

Fixed in
Oxygenz Clipbucket≥ 5.5.1-239

References

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Frequently asked

Is CVE-2025-21624 being actively exploited?

CVE-2025-21624 is not in the CISA KEV catalog. A public exploit reference exists, so treat it as exploitable. Its EPSS exploit probability is 1.20%.

How severe is CVE-2025-21624?

CVE-2025-21624 has a CVSS 3.1 base score of 9.8, rated critical. EPSS estimates a 1.20% probability of exploitation.

Which products are affected by CVE-2025-21624?

Affected products include Oxygenz Clipbucket.

How do I fix CVE-2025-21624?

Upgrade affected software to a fixed version, for example Oxygenz Clipbucket 5.5.1-239 or later, then confirm no affected versions remain in your inventory.

How Secuno handles this

Secuno correlates vulnerabilities like CVE-2025-21624 against the real software inventory on every managed device, as each hourly inventory arrives. Rather than a static severity, each match is scored in context: exploit availability, EPSS, the asset's exposure, and business criticality decide where it lands in the queue. If an affected version is present anywhere across your portfolio, it surfaces automatically with a prioritised remediation path.

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Data from the NVD, CISA KEV catalog and FIRST EPSS. CVSS 3.1 base score shown where available.