A vulnerability was found in NousResearch hermes-agent up to 0.18.2. (CVE-2026-84289)
A vulnerability was found in NousResearch hermes-agent up to 0.18.2. This vulnerability affects the function list_tools of the file tools/mcp_tool.py of the component MCP Tool. Performing a manipulation results in uncontrolled memory allocation. It is possible to initiate the attack remotely. The exploit has been made public and could be used. The vendor was contacted early about this disclosure but did not respond in any way.
A vulnerability was found in NousResearch hermes-agent up to 0.18.2. (CVE-2026-84289)
Description
A vulnerability was found in NousResearch hermes-agent up to 0.18.2. This vulnerability affects the function list_tools of the file tools/mcp_tool.py of the component MCP Tool. Performing a manipulation results in uncontrolled memory allocation. It is possible to initiate the attack remotely. The exploit has been made public and could be used. The vendor was contacted early about this disclosure but did not respond in any way.
CVSS v3.1
Score 4.3medium
Weaknesses
Technical Details
- Gcve Source
- db.gcve.eu
- Osv Id
- GHSA-mqg2-c725-2vx3
- Osv Schema Version
- 1.4.0
- Aliases
- ["CVE-2026-84289"]
- Ecosystems
- []
- Database Specific Severity
- LOW
- Cvss Version
- 3.1
Threat ID: 6a984569acd9273b496acca1
Added to database: 09/02/2026, 15:48:57 UTC
Last updated: 09/03/2026, 01:52:00 UTC
Views: 3
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