| 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) | 2026-08-06 |
| Affected versions | not published yet, see the advisory |
| Fixed in | see the vendor advisory |
| Weakness | CWE-266CWE-284 |
| CISA KEV | not listed |
NVD description
A vulnerability was detected in NousResearch hermes-agent up to 0.16.0. Affected by this issue is some unknown functionality of the file hermes-agent/model_tools.py of the component Memory Toolset. The manipulation results in improper access controls. The attack can be executed remotely. The exploit is now public and may be used.
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-2026-18993
- https://github.com/NousResearch/hermes-agent/
- https://github.com/NousResearch/hermes-agent/issues/46171
- https://github.com/NousResearch/hermes-agent/issues/48181
- https://github.com/NousResearch/hermes-agent/pull/46185
- https://vuldb.com/cve/CVE-2026-18993
- https://vuldb.com/submit/862610
- https://vuldb.com/vuln/386377
- https://vuldb.com/vuln/386377/cti
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