Remote Code Execution Vulnerability in Zhayujie ChatGPT-on-WeChat CowAgent Software
CVE-2026-6129

6.9MEDIUM

Key Information:

Vendor

Zhayujie

Status
Chatgpt-on-wechat Cowagent
Vendor
CVE Published:
12 April 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-6129?

A significant vulnerability has been identified in the Zhayujie ChatGPT-on-WeChat CowAgent, affecting versions up to 2.0.4. This vulnerability arises from a flaw in the Agent Mode Service, where missing authentication allows unauthorized remote access and potential exploitation. Although the issue was reported to the development team early on, no response has been documented. This presents a serious risk as the exploit is now public and could be utilized by malicious actors to manipulate the system.

Affected Version(s)

chatgpt-on-wechat CowAgent 2.0.0

chatgpt-on-wechat CowAgent 2.0.1

chatgpt-on-wechat CowAgent 2.0.2

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-2026-6129 - Proof of Concept

References

https://vuldb.com/vuln/356992
vdb-entry
https://vuldb.com/vuln/356992/cti
signaturepermissions-required
https://vuldb.com/submit/795272
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

York Shen (VulDB User)
VulDB CNA Team
.