Unrestricted File Upload Vulnerability in Metasoft 美特软件 MetaCRM
CVE-2026-8758

6.9MEDIUM

Key Information:

Vendor

Metasoft 美特软件

Status
Metacrm
Vendor
CVE Published:
17 May 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-8758?

A vulnerability exists in Metasoft 美特软件 MetaCRM versions up to 6.4.0 Beta06 that allows for the unrestricted upload of files through the /common/jsp/upload3.jsp endpoint. By manipulating the File argument, an attacker can upload a malicious file without appropriate restrictions. This vulnerability can be exploited remotely, raising significant security concerns. The issue has been publicly disclosed, and although the vendor was informed about this weakness, they have yet to respond.

Affected Version(s)

MetaCRM 6.4.0 Beta06

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-2026-8758 - Proof of Concept

References

https://vuldb.com/vuln/364385
vdb-entrytechnical-description
https://vuldb.com/vuln/364385/cti
signaturepermissions-required
https://vuldb.com/submit/811283
third-party-advisory

CVSS V4

Score:
6.9
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

red88-debug (VulDB User)
VulDB CNA Team
.