CVE-2026-84287
NousResearch hermes-agent Session Chat api_server.py denial of service
- State
- Published
- Severity
- 5.3 Medium
- Published
- Sep 1, 2026
- Updated
- Sep 4, 2026
- Reserved
- Sep 1, 2026
Description
A flaw has been found in NousResearch hermes-agent 0.18.0. Affected by this issue is some unknown functionality of the file gateway/platforms/api_server.py of the component Session Chat Interface. This manipulation causes denial of service. The attack is possible to be carried out remotely. The exploit has been published and may be used. The vendor was contacted early about this disclosure but did not respond in any way.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 5.3 Medium | CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P | VulDB |
| 3.1 | 4.3 Medium | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L/E:P/RL:X/RC:R | VulDB |
| 3.0 | 4.3 Medium | CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L/E:P/RL:X/RC:R | VulDB |
| 2.0 | 4.0 Medium | AV:N/AC:L/Au:S/C:N/I:N/A:P/E:POC/RL:ND/RC:UR | VulDB |
Weaknesses
- CWE-404 Denial of Service
Affected Products
| Product | Versions |
|---|---|
hermes-agentNousResearch |
|
References
- VDB-397718 | NousResearch hermes-agent Session Chat api_server.py denial of servicevdb-entry
- VDB-397718 | CTI Indicators (IOB, IOC, TTP, IOA)signaturepermissions-required
- CVE-2026-84287 | CVE Analysis and Reportthird-party-advisory
- Submit #882712 | NousResearch hermes-agent 0.18.0 Denial of Servicethird-party-advisory
- Submit #882795 | NousResearch hermes-agent 0.18.0 Denial of Service (Duplicate)third-party-advisory
- https://github.com/hackerguopeng/cve/tree/main/Hermes_API_Server_Session_Chat_DoS_Reportexploit
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