| Component | Hermes Agent |
| Severity | high (CVSS 7.3) |
| CVSS vector | CVSS:3.1/AV:N/AC:L/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 vulnerability was identified in NousResearch hermes-agent up to 0.12.0. Affected by this vulnerability is the function _compress_context of the file run_agent.py. The manipulation leads to injection. It is possible to initiate 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.
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-2026-10221
- https://gist.github.com/YLChen-007/d343fcfe2c009cd45f56dc475fd5ac03
- https://vuldb.com/cve/CVE-2026-10221
- https://vuldb.com/submit/822019
- https://vuldb.com/vuln/367500
- https://vuldb.com/vuln/367500/cti
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