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8.8
HIGH CVSS 3.1
CVE-2025-15009
liweiyi ChestnutCMS Filename upload FilenameUtils.getExtension unrestricted upload
Description

A flaw has been found in liweiyi ChestnutCMS up to 1.5.8. This vulnerability affects the function FilenameUtils.getExtension of the file /dev-api/common/upload of the component Filename Handler. Executing manipulation of the argument File can lead to unrestricted upload. The attack may be launched remotely. The exploit has been published and may be used.

INFO

Published Date :

Dec. 22, 2025, 3:15 a.m.

Last Modified :

Dec. 31, 2025, 3:51 p.m.

Remotely Exploit :

Yes !

Source :

[email protected]
Affected Products

The following products are affected by CVE-2025-15009 vulnerability. Even if cvefeed.io is aware of the exact versions of the products that are affected, the information is not represented in the table below.

ID Vendor Product Action
1 1000mz chestnutcms
: Total Affected Vendor : 1 | Products : 1
CVSS Scores
The Common Vulnerability Scoring System is a standardized framework for assessing the severity of vulnerabilities in software and systems. We collect and displays CVSS scores from various sources for each CVE.
Score Version Severity Vector Exploitability Score Impact Score Source
CVSS 2.0 MEDIUM [email protected]
CVSS 3.1 MEDIUM [email protected]
CVSS 3.1 HIGH [email protected]
CVSS 4.0 MEDIUM [email protected]
Solution
Update Filename Handler component to a patched version to prevent unrestricted file uploads.
  • Update the Filename Handler component.
  • Apply any available security patches for ChestnutCMS.
  • Restrict file upload types and sizes.
  • Validate all uploaded file types.
References to Advisories, Solutions, and Tools

Here, you will find a curated list of external links that provide in-depth information, practical solutions, and valuable tools related to CVE-2025-15009.

URL Resource
https://github.com/yuccun/CVE/blob/main/ChestnutCMS-Arbitrary_File_Upload.md Exploit Third Party Advisory
https://github.com/yuccun/CVE/blob/main/ChestnutCMS-Arbitrary_File_Upload.md#vulnerability-proof Exploit Third Party Advisory
https://vuldb.com/?ctiid.337715 Permissions Required VDB Entry
https://vuldb.com/?id.337715 Third Party Advisory VDB Entry
https://vuldb.com/?submit.719590 Third Party Advisory VDB Entry
CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2025-15009 is associated with the following CWEs:

Common Attack Pattern Enumeration and Classification (CAPEC)

Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2025-15009 weaknesses.

CAPEC-19: Embedding Scripts within Scripts Embedding Scripts within Scripts CAPEC-441: Malicious Logic Insertion Malicious Logic Insertion CAPEC-478: Modification of Windows Service Configuration Modification of Windows Service Configuration CAPEC-479: Malicious Root Certificate Malicious Root Certificate CAPEC-502: Intent Spoof Intent Spoof CAPEC-503: WebView Exposure WebView Exposure CAPEC-536: Data Injected During Configuration Data Injected During Configuration CAPEC-546: Incomplete Data Deletion in a Multi-Tenant Environment Incomplete Data Deletion in a Multi-Tenant Environment CAPEC-550: Install New Service Install New Service CAPEC-551: Modify Existing Service Modify Existing Service CAPEC-552: Install Rootkit Install Rootkit CAPEC-556: Replace File Extension Handlers Replace File Extension Handlers CAPEC-558: Replace Trusted Executable Replace Trusted Executable CAPEC-562: Modify Shared File Modify Shared File CAPEC-563: Add Malicious File to Shared Webroot Add Malicious File to Shared Webroot CAPEC-564: Run Software at Logon Run Software at Logon CAPEC-578: Disable Security Software Disable Security Software CAPEC-1: Accessing Functionality Not Properly Constrained by ACLs Accessing Functionality Not Properly Constrained by ACLs

We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).

Results are limited to the first 15 repositories due to potential performance issues.

The following list is the news that have been mention CVE-2025-15009 vulnerability anywhere in the article.

Results are limited to the first 20 news articles due to potential performance issues.

The following table lists the changes that have been made to the CVE-2025-15009 vulnerability over time.

Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.

  • Initial Analysis by [email protected]

    Dec. 31, 2025

    Action Type Old Value New Value
    Added CVSS V3.1 AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
    Added CPE Configuration OR *cpe:2.3:a:1000mz:chestnutcms:*:*:*:*:*:*:*:* versions up to (including) 1.5.8
    Added Reference Type VulDB: https://github.com/yuccun/CVE/blob/main/ChestnutCMS-Arbitrary_File_Upload.md Types: Exploit, Third Party Advisory
    Added Reference Type VulDB: https://github.com/yuccun/CVE/blob/main/ChestnutCMS-Arbitrary_File_Upload.md#vulnerability-proof Types: Exploit, Third Party Advisory
    Added Reference Type VulDB: https://vuldb.com/?ctiid.337715 Types: Permissions Required, VDB Entry
    Added Reference Type VulDB: https://vuldb.com/?id.337715 Types: Third Party Advisory, VDB Entry
    Added Reference Type VulDB: https://vuldb.com/?submit.719590 Types: Third Party Advisory, VDB Entry
  • New CVE Received by [email protected]

    Dec. 22, 2025

    Action Type Old Value New Value
    Added Description A flaw has been found in liweiyi ChestnutCMS up to 1.5.8. This vulnerability affects the function FilenameUtils.getExtension of the file /dev-api/common/upload of the component Filename Handler. Executing manipulation of the argument File can lead to unrestricted upload. The attack may be launched remotely. The exploit has been published and may be used.
    Added CVSS V4.0 AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
    Added CVSS V3.1 AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L
    Added CVSS V2 (AV:N/AC:L/Au:S/C:P/I:P/A:P)
    Added CWE CWE-284
    Added CWE CWE-434
    Added Reference https://github.com/yuccun/CVE/blob/main/ChestnutCMS-Arbitrary_File_Upload.md
    Added Reference https://github.com/yuccun/CVE/blob/main/ChestnutCMS-Arbitrary_File_Upload.md#vulnerability-proof
    Added Reference https://vuldb.com/?ctiid.337715
    Added Reference https://vuldb.com/?id.337715
    Added Reference https://vuldb.com/?submit.719590
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.
Vulnerability Scoring Details
Base CVSS Score: 5.3
Attack Vector
Attack Complexity
Attack Requirements
Privileges Required
User Interaction
VS Confidentiality
VS Integrity
VS Availability
SS Confidentiality
SS Integrity
SS Availability
Base CVSS Score: 8.8
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality Impact
Integrity Impact
Availability Impact
Base CVSS Score: 6.5
Access Vector
Access Complexity
Authentication
Confidentiality Impact
Integrity Impact
Availability Impact