CVE-2025-55912
Published: 18 September 2025
Summary
CVE-2025-55912 is a high-severity Unrestricted Upload of File with Dangerous Type (CWE-434) vulnerability in Oxygenz Clipbucket. Its CVSS base score is 7.3 (High).
Operationally, ranked in the top 8.8% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog; a public proof-of-concept is referenced.
Deeper analysis
ClipBucket versions 5.5.0 and earlier contain an unauthenticated arbitrary file upload vulnerability in the plupload endpoint of photo_uploader.php. The flaw stems from missing access controls in the upload handler and is tracked as CWE-434 with a CVSS 3.1 score of 7.3.
An unauthenticated attacker can send crafted requests over the network to the affected endpoint and upload arbitrary files, resulting in limited impacts to confidentiality, integrity, and availability.
The EPSS score remains flat at 0.0636 with no material increase since disclosure. Public references include the ClipBucket GitHub repository files for the vulnerable release and a technical write-up describing the issue.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2025-29853
Vulnerability details
An issue in ClipBucket 5.5.0 and prior versions allows an unauthenticated attacker can exploit the plupload endpoint in photo_uploader.php to upload arbitrary files without any authentication, due to missing access controls in the upload handler
- CWE(s)
Related Threats
No named actor attribution yet. ATT&CK technique mapping in progress for this CVE.
Affected Assets
Mitigating Controls
Likely Mitigating Controls AI
Per-CVE control mapping for this CVE has not run yet; the list below is derived from the weakness types (CWEs) cited in the NVD entry.
Requiring identifiable owners for portable devices reduces the attack surface for unrestricted uploads of dangerous file types via anonymous media.
Dangerous file uploads can be detonated in the chamber to determine malice before any production write or execution occurs.
Prevents unrestricted writing of arbitrary or malicious firmware by keeping hardware write-protect enabled except under tightly controlled manual procedures.
Scans files from external sources on download/open/execute, blocking unrestricted uploads of dangerous file types.