hermes-agent has a sandbox issue
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.
Affected software
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| Platform | Package | Vulnerable versions | Fixed in |
|---|---|---|---|
| Python (PyPI) | hermes-agent | < 0.11.0 | 0.11.0 |
References
- https://nvd.nist.gov/vuln/detail/CVE-2026-9368
- https://github.com/NousResearch/hermes-agent/commit/285bb2b9150b93445e5eded9bc897a4001b66e55
- https://gist.github.com/YLChen-007/43c72d19668421abe8ce10f299323a0a
- https://github.com/NousResearch/hermes-agent
- https://vuldb.com/submit/812229
- https://vuldb.com/vuln/365331
- https://vuldb.com/vuln/365331/cti
- https://pypi.org/project/hermes-agent
- https://github.com/advisories/GHSA-wm96-9gfh-vvgq
- CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L- Weakness (CWE)
CWE-269, CWE-526- Platform
- Python (PyPI)
- Package
hermes-agent- Disclosed
- 26.05.2026
- Updated
- 11.10.2026 14:18
Sources and licenses
OSV / GitHub Advisory Database - PYSEC-2026-2515 - PyPA Advisory Database; CC BY 4.0
OSV / GitHub Advisory Database - GHSA-wm96-9gfh-vvgq - CC BY 4.0
Vulnerability history: hermes-agent
All published vulnerabilities of this package (Python (PyPI)), newest first. Shows whether this is a one-off slip or a package that needs watching.
- Total entries
- 10
- First → latest
- 05.2026 06.2026
- Without a fix
- 2
- Exploited in attacks
- 0
Severity breakdown
- High 1
- Medium 6
- Low 3
Disclosures per year
- 2026: 10
-
hermes-agent has a sandbox issue this entry
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