Vulnerability in Nousresearch Hermes-Agent
CVE-2026-9368
A vulnerability was identified in NousResearch hermes-agent up to 2026.4.16. This impacts the function execute_code of the file tools/code_execution_tool.py of the component Environment Variable Handler. Such manipulation leads to sandbox issue. It is possible to launch the attack 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.
Published · last modified .
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.
EPSS exploit prediction
EPSS: 0.006 (49.9th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 50th percentile — 49.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.004 · newest: 0.006 · change: +0.003
Affected products
- Nousresearch Hermes-Agent — versions 2026.4.0, 2026.4.1, 2026.4.2
Weakness classification (CWE)
References
- vuldb.com/vuln/365331 (technical-description, vdb-entry)
- vuldb.com/vuln/365331/cti (signature, permissions-required)
- vuldb.com/submit/812229 (third-party-advisory)
- gist.github.com/YLChen-007/43c72d19668421abe8ce10f299323a0a (exploit)
Frequently asked questions
- What is CVE-2026-9368?
- CVE-2026-9368 is a high-severity vulnerability in Nousresearch Hermes-Agent, classified under CWE-264. CVSS score: 7.3/10. Published 2026-05-24.
- How severe is CVE-2026-9368?
- High severity. CVSS v3 base score is 7.3 out of 10.