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CVE-2025-21623— ClipBucket V5 Unauthenticated Template Directory Update to Denial-of-Service

Quick assessment

Affected
MacWarrior clipbucket-v5
Exploitation
Public or AI PoC available; prioritize validation
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

ClipBucket是MacWarrior开源的一个开源且可免费下载的 PHP 脚本。用于共享视频网站。 ClipBucket V5 5.5.1 - 237及之前版本存在安全漏洞，该漏洞源于允许未经身份验证的攻击者通过目录遍历更改模板目录，从而导致拒绝服务。

CVSS 7.5 · High EPSS 1.13% · P65

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application
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I. Basic Information for CVE-2025-21623

Vulnerability Information
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Vulnerability Title
ClipBucket V5 Unauthenticated Template Directory Update to Denial-of-Service
Source: CVE Program / CVE List V5
Vulnerability Description
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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
对路径名的限制不恰当(路径遍历)
Source: CVE Program / CVE List V5
Vulnerability Title
ClipBucket 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
ClipBucket是MacWarrior开源的一个开源且可免费下载的 PHP 脚本。用于共享视频网站。 ClipBucket V5 5.5.1 - 237及之前版本存在安全漏洞，该漏洞源于允许未经身份验证的攻击者通过目录遍历更改模板目录，从而导致拒绝服务。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
MacWarrior clipbucket-v5 < 5.5.1 - 238 -

II. Public POCs for CVE-2025-21623

# POC Description Source Link Shenlong Link
AI-Generated POC Premium
Qwen3.6-35B-A3B · 9745 chars
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Exploit chain & mitigation
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III. Intelligence Information for CVE-2025-21623

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Patches & Fixes for CVE-2025-21623 (1)

Vendor Advisories for CVE-2025-21623 (1)

Same Patch Batch · MacWarrior · 2025-01-07 · 3 CVEs total

CVE-2025-21624 9.8 CRITICAL ClipBucket V5 Playlist Cover File Upload to Remote Code Execution
CVE-2025-21622 7.5 HIGH ClipBucket V5 Avatar URL Path Traversal to Arbitrary File Delete

IV. Related Vulnerabilities

Same product: clipbucket-v5
Same vendor: MacWarrior
Same weakness: CWE-22

V. Comments for CVE-2025-21623

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