TI-2026-08960 Aliases CVE-2026-10222 GHSA-mv8x-fg99-32mf

NousResearch hermes-agent config.py _sanitize_env_lines injection

MEDIUM 61CWE-707Published 2026-06-01 · Updated 2026-06-01

Key facts

Attack vector: Network
Privileges required: None
User interaction: None
Attack complexity: High
Attack requirements: None
Impact type: —
Confidentiality · integrity · availability: Low · Low · Low
Fix status: Fixed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA and GitHub.

Summary

A security flaw has been discovered in NousResearch hermes-agent up to 2026.4.30. Affected by this issue is the function _sanitize_env_lines of the file hermes_cli/config.py. The manipulation results in injection. It is possible to launch the attack remotely. The attack requires a high level of complexity. The exploitation is known to be difficult. The exploit has been released to the public and may be used for attacks. The vendor was contacted early about this disclosure but did not respond in any way.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV

EPSS 0.00267 18th percentileScored 2026-11-07

Public exploit Yes 1 exploit referenceTagged by the CNA

Fix Fixed hermes-agent (PyPI): 0.18.0

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: Poc
Automatable: No
Technical impact: Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
NousResearch	hermes-agent	2026.4.0; 2026.4.1; 2026.4.2; 2026.4.3; 2026.4.4; 2026.4.5; 2026.4.6; 2026.4.7; 2026.4.8; 2026.4.9; 2026.4.10; 2026.4.11; 2026.4.12; 2026.4.13; 2026.4.14; 2026.4.15; 2026.4.16; 2026.4.17; 2026.4.18; 2026.4.19; 2026.4.20; 2026.4.21; 2026.4.22; 2026.4.23; 2026.4.24; 2026.4.25; 2026.4.26; 2026.4.27; 2026.4.28; 2026.4.29; 2026.4.30	—	No fix listed	CNA
—	hermes-agent (PyPI)	before 0.18.0	0.18.0	Patch available	GHSA-mv8x-fg99-32mf

hermes-agent VendorNousResearch Affected 2026.4.0; 2026.4.1; 2026.4.2; 2026.4.3; 2026.4.4; 2026.4.5; 2026.4.6; 2026.4.7; 2026.4.8; 2026.4.9; 2026.4.10; 2026.4.11; 2026.4.12; 2026.4.13; 2026.4.14; 2026.4.15; 2026.4.16; 2026.4.17; 2026.4.18; 2026.4.19; 2026.4.20; 2026.4.21; 2026.4.22; 2026.4.23; 2026.4.24; 2026.4.25; 2026.4.26; 2026.4.27; 2026.4.28; 2026.4.29; 2026.4.30 Fixed in — No fix listed CNA
hermes-agent (PyPI) Vendor— Affected before 0.18.0 Fixed in 0.18.0 Patch available GHSA-mv8x-fg99-32mf

CPE names CNA · 1

CPE	Versions	Role	Vendor
cpe:2.3:a:nousresearch:hermes-agent::::::::	—	—	NousResearch

cpe:2.3:a:nousresearch:hermes-agent:*:*:*:*:*:*:*:* Versions — — ·NousResearch

Remediation

Fix · GHSA-mv8x-fg99-32mf hermes-agent (PyPI) Fixed in 0.18.0 Advisory →

Timeline

2026-10-02 Threatist record created from CVE-2026-10222
2026-10-03 Alias added: GHSA-mv8x-fg99-32mf

References

Exploit 1

https://gist.github.com/YLChen-007/7ee2eeaa383b3540d2e8854250c03fb0

Advisory 1

https://nvd.nist.gov/vuln/detail/CVE-2026-10222

Other 3

TI-2026-50258 Hermes Agent 0.18.2 - 0.21.0 RCE via git core.fsmonitor Config Injection CVSS 4.0HIGH 8.6
TI-2026-12325 NousResearch hermes-agent Live Webhook Endpoint base.py extract_media path traversal CVSS 4.0MEDIUM 6.9
TI-2026-08962 NousResearch hermes-agent Webhook Endpoint feishu.py _handle_webhook_request resource consumption CVSS 4.0MEDIUM 6.9
TI-2026-08959 NousResearch hermes-agent run_agent.py _compress_context injection CVSS 4.0MEDIUM 6.9
TI-2026-08958 NousResearch hermes-agent skills_tool.py skill_view injection CVSS 4.0MEDIUM 6.9
TI-2026-08218 NousResearch hermes-agent Environment Variable code_execution_tool.py execute_code sandbox CVSS 4.0MEDIUM 6.9

See all 44 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences