Vulnerability · Published Jul 26, 2026 · Assigned by VulDB
CVE-2026-17432NousResearch hermes-agent SimpleX Gateway Authorization adapter.py access control
Medium 5.0
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 30% of all known vulnerabilities).
Official description
A vulnerability was detected in NousResearch hermes-agent 2026.6.5. Affected by this vulnerability is an unknown functionality of the file hermes-agent/plugins/platforms/simplex/adapter.py of the component SimpleX Gateway Authorization. The manipulation of the argument contactId results in improper access controls. The attack may be launched remotely. A high complexity level is associated with this attack. The exploitation appears to be difficult. The exploit is now public and may be used. The patch is identified as 490c486ff65b766d9de0fe0e6f26e1778aaa8fb3. Applying a patch is advised to resolve this issue.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| NousResearch | hermes-agent | 2026.6.5 |
Weakness: CWE-284, CWE-266 · Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:O/RC:C
References
- VDB-383065 | NousResearch hermes-agent SimpleX Gateway Authorization adapter.py access control vdb-entry, technical-description
- VDB-383065 | CTI Indicators (IOB, IOC, TTP, IOA) signature, permissions-required
- CVE-2026-17432 | CVE Analysis and Report third-party-advisory
- Submit #862424 | NousResearch hermes-agent 9121834b31984c2125738c7243792cbd2dc79df6 (unreleased origin/main, post-v2026.6.5) Authentication Bypass by Spoofing (CWE-290) third-party-advisory
- https://github.com/NousResearch/hermes-agent/issues/44730 issue-tracking
- https://github.com/NousResearch/hermes-agent/pull/41246 issue-tracking, patch
- https://github.com/NousResearch/hermes-agent/issues/44729 exploit, issue-tracking
- https://github.com/NousResearch/hermes-agent/commit/490c486ff65b766d9de0fe0e6f26e1778aaa8fb3 patch
- https://github.com/NousResearch/hermes-agent/ product