CVE-2026-84287CWE-404

CVE-2026-84287

Medium · published September 2, 2026

CVSS v3.1
4.3
EPSS
1%
Percentile
43.4
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
4.3 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
CVSS v4.0
5.3 · 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
EPSS
0.00521 · 43.4th percentile
Weakness
CWE-404 · Improper Resource Shutdown or Release
Published
2026-09-02T01:18Z
References (6)
https://github.com/hackerguopeng/cve/tree/main/Hermes_API_Server_Session_Chat_DoS_Report · [email protected]https://vuldb.com/cve/CVE-2026-84287 · [email protected]https://vuldb.com/submit/882712 · [email protected]https://vuldb.com/submit/882795 · [email protected]https://vuldb.com/vuln/397718 · [email protected]https://vuldb.com/vuln/397718/cti · [email protected]
EPSS history
Timeline
  • 03 SEP 03:32Z
    EPSS moved — → 0%
    epss
  • 01 SEP 21:00Z
    NousResearch hermes-agent Session Chat api_server.py denial of service
    cvelistv5