Unrestricted File Upload Vulnerability in liweiyi ChestnutCMS
CVE-2025-15009

5.3MEDIUM

Key Information:

Vendor

Liweiyi

Status
Chestnutcms
Vendor
CVE Published:
22 December 2025

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2025-15009?

A critical flaw has been identified in liweiyi's ChestnutCMS versions up to 1.5.8, specifically in the FilenameUtils.getExtension function of the file handling component. This vulnerability allows attackers to manipulate the File argument, potentially leading to unrestricted file uploads. Such exploitation can be executed remotely, putting systems at significant risk. An exploit has already been made public, emphasizing the urgency for users to take preventive measures.

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Affected Version(s)

ChestnutCMS 1.5.0

ChestnutCMS 1.5.1

ChestnutCMS 1.5.2

Exploit Proof of Concept (PoC)

PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.

CVE-2025-15009 - Proof of Concept

References

https://vuldb.com/?id.337715
vdb-entrytechnical-description
https://vuldb.com/?ctiid.337715
signaturepermissions-required
https://vuldb.com/?submit.719590
third-party-advisory

CVSS V4

Score:
5.3
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
Low
Availability:
Low
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

Credit

yuccun (VulDB User)
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