Missing Authorization in NousResearch Hermes-Agent Batch Runner
CVE-2026-9350

6.9MEDIUM

Key Information:

Vendor

Nousresearch

Status
Hermes-agent
Vendor
CVE Published:
24 May 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-9350?

A security flaw has been discovered in the NousResearch hermes-agent within the Batch Runner component. This vulnerability arises from the check_all_command_guards function located in tools/approval.py, which lacks proper authorization checks. This oversight can allow unauthorized manipulation of command executions, potentially leading to significant security risks. The issue is exploitable remotely, and details regarding the exploit have been made public. Despite early notifications, the vendor has not provided a response to address this vulnerability.

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-2026-9350 - Proof of Concept

References

https://vuldb.com/vuln/365313
vdb-entrytechnical-description
https://vuldb.com/vuln/365313/cti
signaturepermissions-required
https://vuldb.com/submit/812213
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-h (VulDB User)
VulDB CNA Team
.