Injection Vulnerability in NousResearch Hermes-Agent Software
CVE-2026-10222

6.3MEDIUM

Key Information:

Vendor

Nousresearch

Status
Hermes-agent
Vendor
CVE Published:
1 June 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-10222?

A critical injection vulnerability was identified in the NousResearch hermes-agent, specifically in the _sanitize_env_lines function of the hermes_cli/config.py file. This flaw enables attackers to manipulate input in a way that could lead to remote code execution. Although the exploitation of this vulnerability is complex and challenging, proof-of-concept exploits are publicly available, increasing the risk of potential attacks. The vendor was notified regarding this vulnerability but has not issued a response or patch.

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-2026-10222 - Proof of Concept

References

https://vuldb.com/vuln/367501
vdb-entrytechnical-description
https://vuldb.com/vuln/367501/cti
signaturepermissions-required
https://vuldb.com/cve/CVE-2026-10222
third-party-advisory

CVSS V4

Score:
6.3
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
Low
Availability:
Low
Attack Vector:
Network
Attack Complexity:
High
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

Credit

Eric-j (VulDB User)
VulDB CNA Team
.