| Component | Hermes Agent |
| Severity | medium (CVSS 5.6) |
| CVSS vector | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L |
| Published (NVD) | 2026-06-01 |
| Affected versions | not published yet, see the advisory |
| Fixed in | see the vendor advisory |
| Weakness | CWE-74CWE-707 |
| CISA KEV | not listed |
NVD description
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.
What to do
- NVD lists no fixed version yet: follow the vendor advisory below and keep Hermes Agent off the public internet until a fix ships.
- Do not expose the component's API or UI to the internet without authentication in front of it.
Sources
- NVD: CVE-2026-10222
- https://gist.github.com/YLChen-007/7ee2eeaa383b3540d2e8854250c03fb0
- https://vuldb.com/cve/CVE-2026-10222
- https://vuldb.com/submit/822020
- https://vuldb.com/vuln/367501
- https://vuldb.com/vuln/367501/cti
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