CVE-2026-71963: Improper Neutralization of Special Elements used in an OS Command

Hermes Agent 0.18.2 through 0.21.0, fixed in commit f6234d0, contains a remote code execution vulnerability that allows attackers to execute arbitrary OS commands by supplying a malicious repository with a crafted .git/config that sets core.fsmonitor to an attacker-controlled command. When a user...

PT-2026-85009

A vulnerability has been found in NousResearch hermes-agent 0.18.0. This affects the function fetchLinkTitle of the file apps/desktop/src/app/artifacts/index.tsx of the component Link Title Fetch. Such manipulation of the argument url leads to server-side request forgery. The attack can be launch...

PT-2026-84984

A flaw has been found in NousResearch hermes-agent 0.18.0. Affected by this issue is the function sess nowait of the file s71.py of the component Session Management. This manipulation of the argument session id causes authorization bypass. The attack can be initiated remotely. The vendor was...

CVE-2026-85105: Authorization Bypass Through User-Controlled Key

A flaw has been found in NousResearch hermes-agent 0.18.0. Affected by this issue is the function sessnowait of the file s71.py of the component Session Management. This manipulation of the argument sessionid causes authorization bypass. The attack can be initiated remotely. The vendor was...

EUVD-2026-69713

A vulnerability was found in NousResearch hermes-agent up to 0.18.2. This vulnerability affects the function listtools of the file tools/mcptool.py of the component MCP Tool. Performing a manipulation results in uncontrolled memory allocation. It is possible to initiate the attack remotely. The...

EUVD-2026-69700

A vulnerability has been found in NousResearch hermes-agent up to 0.18.2. This affects the function HermesACPAgent.prompt of the file acpadapter/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...

CVE-2026-84289

A vulnerability was found in NousResearch hermes-agent up to 0.18.2. This vulnerability affects the function listtools of the file tools/mcptool.py of the component MCP Tool. Performing a manipulation results in uncontrolled memory allocation. It is possible to initiate the attack remotely. The...

CVE-2026-84288

A vulnerability has been found in NousResearch hermes-agent up to 0.18.2. This affects the function HermesACPAgent.prompt of the file acpadapter/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...

CVE-2026-84289 NousResearch hermes-agent MCP Tool mcp_tool.py list_tools memory allocation

A vulnerability was found in NousResearch hermes-agent up to 0.18.2. This vulnerability affects the function listtools of the file tools/mcptool.py of the component MCP Tool. Performing a manipulation results in uncontrolled memory allocation. It is possible to initiate the attack remotely. The...

CVE-2026-84289 NousResearch hermes-agent MCP Tool mcp_tool.py list_tools memory allocation

A vulnerability was found in NousResearch hermes-agent up to 0.18.2. This vulnerability affects the function listtools of the file tools/mcptool.py of the component MCP Tool. Performing a manipulation results in uncontrolled memory allocation. It is possible to initiate the attack remotely. The...

CVE-2026-84289

A vulnerability in NousResearch hermes-agent up to version 0.18.2 affects the list_tools function in tools/mcp_tool.py (MCP Tool component). The root cause is uncontrolled memory allocation , which can lead to a resource amplification denial-of-service when manipulated remotely. The CVSS 4.0 scor...

CVE-2026-84287

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/apiserver.py of the component Session Chat Interface. This manipulation causes denial of service. The attack is possible to be carried out remotely. The...

CVE-2026-84288 NousResearch hermes-agent ACP Prompt Workflow session.py HermesACPAgent.prompt denial of service

A vulnerability has been found in NousResearch hermes-agent up to 0.18.2. This affects the function HermesACPAgent.prompt of the file acpadapter/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...

CVE-2026-84288

NousResearch hermes-agent (up to version 0.18.2) contains a denial of service vulnerability in the HermesACPAgent.prompt function located in acp_adapter/session.py (ACP Prompt Workflow component). The attack can be performed remotely with low privileges and no user interaction required. A proof-o...

CVE-2026-84288 NousResearch hermes-agent ACP Prompt Workflow session.py HermesACPAgent.prompt denial of service

A vulnerability has been found in NousResearch hermes-agent up to 0.18.2. This affects the function HermesACPAgent.prompt of the file acpadapter/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...

CVE-2026-84287 NousResearch hermes-agent Session Chat api_server.py denial of service

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/apiserver.py of the component Session Chat Interface. This manipulation causes denial of service. The attack is possible to be carried out remotely. The...

EUVD-2026-69699

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/apiserver.py of the component Session Chat Interface. This manipulation causes denial of service. The attack is possible to be carried out remotely. The...

CVE-2026-84287 NousResearch hermes-agent Session Chat api_server.py denial of service

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/apiserver.py of the component Session Chat Interface. This manipulation causes denial of service. The attack is possible to be carried out remotely. The...

CVE-2026-84287

A denial-of-service vulnerability exists in NousResearch hermes-agent 0.18.0 , specifically within the Session Chat Interface component in the file gateway/platforms/api_server.py. The flaw allows a remote attacker with low privileges to cause a service disruption. The exploit is reported as publ...

CVE-2026-84287: Improper Resource Shutdown or Release

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/apiserver.py of the component Session Chat Interface. This manipulation causes denial of service. The attack is possible to be carried out remotely. The...