Code Execution Vulnerability in NousResearch hermes-agent Environment Variable Handler
CVE-2026-9368

6.9MEDIUM

Key Information:

Vendor

Nousresearch

Status
Hermes-agent
Vendor
CVE Published:
24 May 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-9368?

A vulnerability exists in the NousResearch hermes-agent's environment variable handler located in the execute_code function of tools/code_execution_tool.py. This flaw allows for sandbox escape due to improper handling of environment variables, which can be exploited remotely. An attacker can leverage this vulnerability to execute arbitrary code, posing significant risks to system integrity. Although the vendor was informed about this issue, there has been no response, heightening concerns over potential exploitation since public exploit information is available.

Affected Version(s)

hermes-agent 2026.4.0

hermes-agent 2026.4.1

hermes-agent 2026.4.2

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-2026-9368 - Proof of Concept

References

https://vuldb.com/vuln/365331
vdb-entrytechnical-description
https://vuldb.com/vuln/365331/cti
signaturepermissions-required
https://vuldb.com/submit/812229
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

Eric-i (VulDB User)
VulDB CNA Team
.