What is the CVSS score of CVE-2025-21623?

CVE-2025-21623 has a CVSS 3.1 base score of 7.5 (High). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H. EPSS exploitation probability: 1.4%.

Which versions of Clipbucket are affected by CVE-2025-21623?

CVE-2025-21623 presents notable security risk, a path traversal vulnerability rated CVSS 7.5.. A patch is available.

Is there a public PoC exploit available for CVE-2025-21623?

Yes, a public proof-of-concept exploit is available for CVE-2025-21623. Prioritise patching immediately. EPSS: 1.4%.

How to fix or mitigate CVE-2025-21623?

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

Clipbucket CVE-2025-21623

HIGH

Path Traversal (CWE-22)

2025-01-07 security-advisories@github.com

Denial Of Service Path Traversal Clipbucket Oxygenz

7.5

CVSS 3.1 · GitHub Advisory

Severity by source

GitHub Advisory PRIMARY

7.5 HIGH

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

Primary rating from GitHub Advisory · only source for this CVE.

CVSS VectorGitHub Advisory

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

High

Lifecycle Timeline

Analysis Generated

Mar 28, 2026 - 18:02 vuln.today

Patch released

Mar 28, 2026 - 18:02 nvd

Patch available

PoC Detected

Sep 05, 2025 - 16:34 vuln.today

Public exploit code

CVE Published

Jan 07, 2025 - 16:15 nvd

HIGH 7.5

DescriptionGitHub Advisory

ClipBucket V5 provides open source video hosting with PHP. Prior to 5.5.1 - 238, ClipBucket V5 allows unauthenticated attackers to change the template directory via a directory traversal, which results in a denial of service.

AnalysisAI

ClipBucket V5 provides open source video hosting with PHP. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity. Public exploit code available.

Technical ContextAI

This vulnerability is classified as Path Traversal (CWE-22), which allows attackers to access files and directories outside the intended path. ClipBucket V5 provides open source video hosting with PHP. Prior to 5.5.1 - 238, ClipBucket V5 allows unauthenticated attackers to change the template directory via a directory traversal, which results in a denial of service. Affected products include: Oxygenz Clipbucket. Version information: Prior to 5.5.1.

RemediationAI

A vendor patch is available. Apply the latest security update as soon as possible. Validate and canonicalize file paths. Use chroot or sandboxing. Reject input containing path separators or '../' sequences.