Unrestricted File Upload Vulnerability in Huanzi-QCH Base-Admin JSP Parser
CVE-2026-2665

5.3MEDIUM

Key Information:

Vendor

Huanzi-qch

Status
Base-admin
Vendor
CVE Published:
18 February 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-2665?

A vulnerability has been identified in the Huanzi-QCH Base-Admin product, specifically within the JSP Parser component's SysFileController.java. The flaw resides in the Upload function, which allows an attacker to manipulate file arguments and perform unrestricted file uploads. This vulnerability can be exploited remotely, posing significant security risks. The exploit code is publicly available, which raises the urgency for users to assess their systems. Despite being reported early, there has yet to be a response from the project maintainers. Continuous delivery practices complicate the tracking of affected or patched versions.

Affected Version(s)

base-admin 57a8126bb3353a004f3c7722089e3b926ea83596

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-2026-2665 - Proof of Concept

References

https://vuldb.com/?id.346462
vdb-entrytechnical-description
https://vuldb.com/?ctiid.346462
signaturepermissions-required
https://vuldb.com/?submit.753240
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

Jszdk (VulDB User)
.