A vulnerability has been found in NousResearch hermes-agent up to 0.18.2. (CVE-2026-84288)
Description
A denial of service vulnerability exists in NousResearch hermes-agent up to version 0.18.2. The flaw is in the HermesACPAgent.prompt function within the acp_adapter/session.py file of the ACP Prompt Workflow component. This vulnerability can be exploited remotely and the exploit code has been publicly disclosed. The vendor has not responded to the disclosure. The CVSS score is 4.3, indicating a low severity impact.
CVSS v3.1
Score 4.3medium
Affected software
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-84288 is a denial of service vulnerability in the HermesACPAgent.prompt function of the acp_adapter/session.py file in NousResearch hermes-agent versions up to 0.18.2. The vulnerability allows remote attackers to cause a denial of service condition. The exploit has been publicly disclosed, but no vendor response or patch is currently available. The vulnerability is classified under CWE-404 (Improper Resource Shutdown or Release).
Potential Impact
The vulnerability allows remote attackers to cause a denial of service, impacting availability of the affected component. There is no impact on confidentiality or integrity according to the CVSS vector. No known exploits are currently observed in the wild.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Since the vendor has not responded and no patch links are available, users should monitor official channels for updates and consider mitigating exposure to the vulnerable component until a fix is released.
Technical Details
- Gcve Source
- db.gcve.eu
- Osv Id
- GHSA-4pg4-vjj9-4j5w
- Osv Schema Version
- 1.4.0
- Aliases
- ["CVE-2026-84288"]
- Database Specific Severity
- LOW
- Cvss Version
- 3.1
Threat ID: 6a98456cacd9273b496acda1
Added to database: 09/02/2026, 15:49:00 UTC
Last enriched: 09/07/2026, 22:23:01 UTC
Last updated: 10/18/2026, 18:48:24 UTC
Views: 91
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