CVE-2026-9350

NousResearch hermes-agent Batch Runner approval.py check_all_command_guards authorization

State: Published
Severity: 6.9 Medium
Published: May 24, 2026
Updated: May 26, 2026
Reserved: May 23, 2026

Description

A vulnerability was identified in NousResearch hermes-agent up to 2026.4.16. This affects the function check_all_command_guards of the file tools/approval.py of the component Batch Runner. Such manipulation leads to missing authorization. The attack can be launched remotely. The exploit is publicly available and might be used. The vendor was contacted early about this disclosure but did not respond in any way.

Scores

CVSS	Score	Vector	Source
4.0	6.9 Medium	CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P	VulDB
3.1	7.3 High	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:R	VulDB
3.0	7.3 High	CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:R	VulDB
2.0	7.5 High	AV:N/AC:L/Au:N/C:P/I:P/A:P/E:POC/RL:ND/RC:UR	VulDB

Weaknesses

CWE-862 Missing Authorization
CWE-863 Incorrect Authorization

Affected Products

Product	Versions
hermes-agentNousResearch	2026.4.0Affected 2026.4.1Affected 2026.4.2Affected 2026.4.3Affected 2026.4.4Affected 2026.4.5Affected 2026.4.6Affected 2026.4.7Affected 2026.4.8Affected 2026.4.9Affected 2026.4.10Affected 2026.4.11Affected 2026.4.12Affected 2026.4.13Affected 2026.4.14Affected 2026.4.15Affected 2026.4.16Affected

References

VDB-365313 | NousResearch hermes-agent Batch Runner approval.py check_all_command_guards authorizationvdb-entrytechnical-description
VDB-365313 | CTI Indicators (IOB, IOC, IOA)signaturepermissions-required
Submit #812213 | NousResearch hermes-agent 2026.4.16 Missing Authorization (CWE-862)third-party-advisory
https://gist.github.com/YLChen-007/22cada4c9060f5123dde6185135ae3abexploit

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