What is the CVSS score of CVE-2025-55912?

CVE-2025-55912 has a CVSS 3.1 base score of 7.3 (High). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L. EPSS exploitation probability: 4.1%.

Which versions of PHP are affected by CVE-2025-55912?

Organizations using ClipBucket 5.5.0 and prior face moderate risk from CVE-2025-55912, a unrestricted file upload vulnerability rated CVSS 7.3.. A patch is available.

Is there a public PoC exploit available for CVE-2025-55912?

Yes, a public proof-of-concept exploit is available for CVE-2025-55912. Prioritise patching immediately. EPSS: 4.1%.

How to fix or mitigate CVE-2025-55912?

Within 30 days: Identify all affected systems running ClipBucket 5.5.0 and and apply vendor patches as part of regular patch cycle. Review file handling controls and restrict upload directories.

PHP CVE-2025-55912

HIGH

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

2025-09-18 cve@mitre.org

PHP File Upload Clipbucket

7.3

CVSS 3.1 · NVD

Severity by source

NVD PRIMARY

7.3 HIGH

AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

Low

Integrity

Low

Availability

Low

Lifecycle Timeline

Analysis Generated

Mar 28, 2026 - 19:12 vuln.today

Patch released

Mar 28, 2026 - 19:12 nvd

Patch available

PoC Detected

Oct 31, 2025 - 17:14 vuln.today

Public exploit code

CVE Published

Sep 18, 2025 - 16:15 nvd

HIGH 7.3

DescriptionCVE.org

AnalysisAI

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. Rated high severity (CVSS 7.3), this vulnerability is remotely exploitable, no authentication required, low attack complexity. Public exploit code available.

Technical ContextAI

This vulnerability is classified as Unrestricted File Upload (CWE-434), which allows attackers to upload malicious files that can be executed on the server. 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 Affected products include: Oxygenz Clipbucket.

RemediationAI

A vendor patch is available. Apply the latest security update as soon as possible. Validate file types server-side, store uploads outside webroot, use random filenames, scan for malware.

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CVE-2025-55912 vulnerability details – vuln.today

Back

PHP CVE-2025-55912

Severity by source

CVSS VectorNVD

Lifecycle Timeline

DescriptionCVE.org

AnalysisAI

Technical ContextAI

RemediationAI

More from same product – last 7 days

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External POC / Exploit Code