| Component | Hermes Agent |
| Severity | medium (CVSS 6.3) |
| CVSS vector | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L |
| Published (NVD) | 2026-08-04 |
| Affected versions | not published yet, see the advisory |
| Fixed in | see the vendor advisory |
| Weakness | CWE-285CWE-863 |
| CISA KEV | not listed |
NVD description
A vulnerability was detected in NousResearch hermes-agent up to 2026.6.5. Affected by this issue is the function _check_slash_access of the file gateway/run.py of the component Quick Command Handler. The manipulation results in incorrect authorization. The attack can be launched remotely. The exploit is now public and may 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-2026-18773
- https://gist.github.com/YLChen-007/f0036aa1c410b70f5e41272947180645
- https://vuldb.com/cve/CVE-2026-18773
- https://vuldb.com/submit/856874
- https://vuldb.com/vuln/385783
- https://vuldb.com/vuln/385783/cti
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