# CVE-2025-21624: ClipBucket V5 Playlist Cover File Upload to Remote Code Execution

> Attackers can upload malicious PHP scripts via playlist covers to execute arbitrary code on the server.

- **Severity:** Critical 9.8 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 7 Jan 2025
- **Updated:** 7 Jan 2025
- **Also known as:** GHSA-98vm-2xqm-xrcc

## What is CVE-2025-21624?

CVE-2025-21624 is a critical vulnerability in MacWarrior clipbucket-v5, published on 7 Jan 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official 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.

Weakness: CWE-434 (Unrestricted Upload of File with Dangerous Type)

## Which versions are affected by CVE-2025-21624?

It affects 1 product.


Products: Oxygenz Clipbucket.

## How do I fix CVE-2025-21624?

No fix has been published for CVE-2025-21624 yet. Limit exposure of the affected software until one is available.

## Is CVE-2025-21624 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-21624 exists.

## Other vulnerabilities in MacWarrior clipbucket-v5

- [CVE-2026-21875](https://insights.sbomify.com/CVE-2026-21875/): ClipBucket v5 Vulnerable to Blind SQL Injection through Channel Comments (critical 9.8)
- [CVE-2025-67418](https://insights.sbomify.com/CVE-2025-67418/): Hardcoded credentials in n/a (critical 9.8)
- [CVE-2024-54135](https://insights.sbomify.com/CVE-2024-54135/): Untrusted Deserialization in ClipBucket-v5 Version 2.0 to 5.5.1 Revision 199 (critical 9.8)
- [CVE-2024-54136](https://insights.sbomify.com/CVE-2024-54136/): Untrusted Deserialization in ClipBucket-v5 Version 5.5.1 Revision 199 and Below (critical 9.8)
- [CVE-2026-25728](https://insights.sbomify.com/CVE-2026-25728/): ClipBucket v5 Affected by Remote Code Execution via Avatar/Background File Upload Race Condition (critical 9.3)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2025-21624 and fix it if it is affected.

What it is: CVE-2025-21624 is a critical vulnerability in MacWarrior clipbucket-v5, published on 7 Jan 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-21624 exists.

Affected product: MacWarrior clipbucket-v5. No package-level version data is available, so check the vendor advisory linked from the reference page.

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2025-21624/ (Markdown: https://insights.sbomify.com/CVE-2025-21624/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2025-21624
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2025-21624
- OSV: https://osv.dev/vulnerability/CVE-2025-21624

---
From sbomify Insights: https://insights.sbomify.com/CVE-2025-21624/
Summaries are generated and may contain mistakes; the official description above is the record.