CVE-2026-84287

Exploitation

Not assessed. CISA has not published an exploitation assessment for this record, and it is not in the KEV catalog. That is an absence of assessment, not a finding of no risk.

SSVC decision

Not assessed by CISA

EPSS probability

0.38% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 31.2% of scored records. A rank, not a probability.

NVD base score

The NVD has published no score for this record

NVD CVSS vector

No NVD score to derive

NVD analysis status

Not recorded

Red Hat severity

No Red Hat rating. Red Hat rates the CVEs that affect its products.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

Published

2026-09-01 21:00Z1 DAY AGO

Last updated

2026-09-01 21:00Z1 DAY AGO

Reserved

2026-09-01

Assigning CNA

VulDB

Record state

PUBLISHED

Severity

Medium (CVSS 5.3)

CNA CVSS vector

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

Weaknesses

• CWE-404Improper Resource Shutdown or ReleaseClass

Data version

5.2

Document digest

416e5bbadd32b54f062a0b91c2b55fe92d716044f88c436a4c870f164c5137ff

• vuldb.comVDB-397718 | NousResearch hermes-agent Session Chat api_server.py denial of servicehttps://vuldb.com/vuln/397718vdb-entry
• vuldb.comVDB-397718 | CTI Indicators (IOB, IOC, TTP, IOA)https://vuldb.com/vuln/397718/ctisignaturepermissions-required
• vuldb.comCVE-2026-84287 | CVE Analysis and Reporthttps://vuldb.com/cve/CVE-2026-84287third-party-advisory
• vuldb.comSubmit #882712 | NousResearch hermes-agent 0.18.0 Denial of Servicehttps://vuldb.com/submit/882712third-party-advisory
• vuldb.comSubmit #882795 | NousResearch hermes-agent 0.18.0 Denial of Service (Duplicate)https://vuldb.com/submit/882795third-party-advisory
• github.comhttps://github.com/hackerguopeng/cve/tree/main/Hermes_API_Server_Session_Chat_DoS_Reportexploit