Vulnerability · Published Aug 6, 2026 · Assigned by VulDB
CVE-2026-18993NousResearch hermes-agent Memory Toolset model_tools.py access control
Medium 6.3
In plain English
A medium-severity improper access control in hermes-agent from NousResearch. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 32% of all known vulnerabilities).
Severity (CVSS 3.1)6.3Medium
Exploit odds (30 days)0.4%top 68.4% of all CVEs
Exploited in the wildNo reportsCISA SSVC: poc
Attack toolingNoneno public tooling known
Official 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.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| NousResearch | hermes-agent | 0.10.20.30.40.50.60.70.8 |
Weakness: CWE-284, CWE-266 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:R
References
- VDB-386377 | NousResearch hermes-agent Memory Toolset model_tools.py access control vdb-entry
- VDB-386377 | CTI Indicators (IOB, IOC, TTP, IOA) signature, permissions-required
- CVE-2026-18993 | CVE Analysis and Report third-party-advisory
- Submit #862610 | NousResearch hermes-agent 0.16.0 Improper Access Control (CWE-284) third-party-advisory
- https://github.com/NousResearch/hermes-agent/issues/46171 issue-tracking
- https://github.com/NousResearch/hermes-agent/pull/46185 issue-tracking, patch
- https://github.com/NousResearch/hermes-agent/issues/48181 exploit, issue-tracking
- https://github.com/NousResearch/hermes-agent/ product