What is CVE-2025-21624?

CVE-2025-21624 is a critical-severity vulnerability in Macwarrior Clipbucket-v5, classified under Unrestricted Upload of File with Dangerous Type. CVSS score: 9.8/10. Published 2025-01-07.

How severe is CVE-2025-21624?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Is CVE-2025-21624 known to be exploited?

4 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Arbitrary file upload in Macwarrior Clipbucket-v5

CVE-2025-21624

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. W…

Vulnerability class: Unrestricted File Upload

EPSS: 0.329 (97.0th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

Affected products

Macwarrior Clipbucket-v5 — versions < 5.5.1 - 239

Weakness classification (CWE)

CWE-434 — Unrestricted Upload of File with Dangerous Type

Public proof-of-concept exploits

References

https://github.com/MacWarrior/clipbucket-v5/security/advisories/GHSA-98vm-2xqm-xrcc (x_refsource_CONFIRM)
https://github.com/MacWarrior/clipbucket-v5/commit/893bfb0f1236c4a59b5e2843ab8d27a1e491b12b (x_refsource_MISC)

Frequently asked questions

What is CVE-2025-21624?: CVE-2025-21624 is a critical-severity vulnerability in Macwarrior Clipbucket-v5, classified under Unrestricted Upload of File with Dangerous Type. CVSS score: 9.8/10. Published 2025-01-07.
How severe is CVE-2025-21624?: Critical severity. CVSS v3 base score is 9.8 out of 10.
Is CVE-2025-21624 known to be exploited?: 4 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.