SEPTEMBER 17, 2026
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Case File

CVE-2026-84288

MEDIUM · CVSS 4.3 EPSS 0.27% Public Exploit

Source: NVD + CISA KEV + EPSS · Published 2026-09-01 · Last synced 2026-09-17

CyberRota Analysis

AI-Generated

A vulnerability in the HermesACPAgent component of NousResearch's hermes-agent, up to version 0.18.2, allows remote attackers to trigger a denial of service through manipulation of the HermesACPAgent.prompt function in the acp_adapter/session.py file. Organizations using this software should prioritize patching or mitigating this issue, as the exploit has been publicly disclosed and could be actively used by attackers.

Public Exploit Signal

A public exploit, PoC, GitHub repository or Metasploit reference was detected for this CVE.

Detected Signals
exploit
GitHub PoC Links

Note: these links are listed for security research and verification purposes only.

CVE
CVE-2026-84288
Severity
MEDIUM
CVSS
4.3
EPSS
0.27%

Original NVD Description

A vulnerability has been found in NousResearch hermes-agent up to 0.18.2. This affects the function HermesACPAgent.prompt of the file acp_adapter/session.py of the component ACP Prompt Workflow. Such manipulation leads to denial of service. The attack may be performed from remote. The exploit has been disclosed to the public and may be used. The vendor was contacted early about this disclosure but did not respond in any way.