CVE-2026-84287

2.1 lowEPSS 0.5%

Low (2.1). EPSS 0.5% chance of exploitation in the next 30 days.

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.

Severity

CVSS 4.0

2.1 low

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

CVSS 3.1

4.3 medium

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L

EPSS: 0.5% chance of exploitation in the next 30 days; higher than 44% of CVEs (scores of 2026-10-31)
CWE: CWE-404
Published: 2026-09-01
Modified: 2026-09-04
Record from: the NVD, synced 2026-10-19

References

https://github.com/hackerguopeng/cve/tree/main/Hermes_API_Server_Session_Chat_DoS_Report
https://vuldb.com/cve/CVE-2026-84287
https://vuldb.com/submit/882712
https://vuldb.com/submit/882795
https://vuldb.com/vuln/397718

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