Auth bypass in Nousresearch Hermes-Agent
CVE-2026-9350
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.
Vulnerability class: Broken Access Control
EPSS: 0.003 (19.9th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 7.3 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L.
Affected products
- Nousresearch Hermes-agent — versions 2026.4.0, 2026.4.1, 2026.4.2
Weakness classification (CWE)
References
- cna@vuldb.com (technical-description, vdb-entry)
- cna@vuldb.com (signature, permissions-required)
- cna@vuldb.com (third-party-advisory)
- cna@vuldb.com (exploit)
Frequently asked questions
- What is CVE-2026-9350?
- CVE-2026-9350 is a high-severity vulnerability in Nousresearch Hermes-Agent, classified under Missing Authorization. CVSS score: 7.3/10. Published 2026-05-24.
- How severe is CVE-2026-9350?
- High severity. CVSS v3 base score is 7.3 out of 10.