MacWarrior clipbucket-v5 up to 5.5.1-236 Avatar Upload avatar_url path traversal

Summaryinfo

A vulnerability classified as critical has been found in MacWarrior clipbucket-v5 up to 5.5.1-236. This issue affects some unknown processing of the component Avatar Upload Handler. This manipulation of the argument avatar_url causes path traversal. The identification of this vulnerability is CVE-2025-21622. It is possible to initiate the attack remotely. There is no exploit available. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability has been found in MacWarrior clipbucket-v5 up to 5.5.1-236 and classified as critical. Affected by this vulnerability is some unknown processing of the component Avatar Upload Handler. The manipulation of the argument avatar_url with an unknown input leads to a path traversal vulnerability. The CWE definition for the vulnerability is CWE-22. The product uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the product does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory. As an impact it is known to affect integrity, and availability. The summary by CVE is:

ClipBucket V5 provides open source video hosting with PHP. During the user avatar upload workflow, a user can choose to upload and change their avatar at any time. During deletion, ClipBucket checks for the avatar_url as a filepath within the avatars subdirectory. If the URL path exists within the avatars directory, ClipBucket will delete it. There is no check for path traversal sequences in the provided user input (stored in the DB as avatar_url) therefore the final $file variable could be tainted with path traversal sequences. This leads to file deletion outside of the intended scope of the avatars folder. This vulnerability is fixed in 5.5.1 - 237.

The advisory is shared at github.com. This vulnerability is known as CVE-2025-21622 since 12/29/2024. The exploitation appears to be easy. The attack can be launched remotely. The exploitation doesn't need any form of authentication. Technical details are known, but no exploit is available. MITRE ATT&CK project uses the attack technique T1006 for this issue.

Upgrading to version 5.5.1-237 eliminates this vulnerability.

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Vendor

• MacWarrior

Name

• clipbucket-v5

Version

• 5.5.1-236

Website

• Product: https://github.com/MacWarrior/clipbucket-v5/

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Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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