PT-2026-84514

Name of the Vulnerable Software and Affected Versions hermes-agent version 0.18.0 Description A flaw in the Session Chat Interface component, specifically within the gateway/platforms/api server.py file, allows a remote attacker to cause a denial of service. Recommendations At the moment, there i...

CVE-2026-84288: Improper Resource Shutdown or Release

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...

PT-2026-84520

Name of the Vulnerable Software and Affected Versions NousResearch hermes-agent versions prior to 0.18.3 Description A flaw in the MCP Tool component allows for uncontrolled memory allocation. This issue occurs within the list tools function located in the tools/mcp tool.py file and can be...

CVE-2026-84289: Memory Allocation with Excessive Size Value

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...

PT-2026-84515

Name of the Vulnerable Software and Affected Versions hermes-agent versions prior to 0.18.3 Description A remote denial of service issue exists within the ACP Prompt Workflow component. The flaw is located in the HermesACPAgent.prompt function within the acp adapter/session.py file, where imprope...

violin v3.2.1

Violin ☤ — Supervised Agentic Hermes Pentest Profile 35 playbooks · 19 references · 14 templates · required execution guard · Hermes-native Violin is a Hermes-native agentic pentest profile for supervised, authorised penetration tests — from reconnaissance through safe exploit validation to...

hermes-agent v2026.8.18

Hermes Agent ☤ Hermes Agent | Hermes Desktop The self-improving AI agent built byNous Research. It's the only agent with a built-in learning loop — it creates skills from experience, improves them during use, nudges itself to persist knowledge, searches its own past conversations, and builds a...

CVE-2026-82021

Hermes Agent 0.18.2 prior to 0.19.0 contains a supply chain vulnerability in its bundled MCP catalog that allows a remote attacker to execute arbitrary code by compromising a third-party upstream repository referenced via a mutable branch rather than a pinned commit SHA. An attacker who compromis...

CVE-2026-82020

Hermes Agent 0.16.0 prior to 0.17.0 contains an improper path restriction vulnerability that allows attackers who can influence ingested message content to overwrite the credential store by bypassing sensitive-path guards that excluded the auth.json file. Attackers can craft malicious messages...

CVE-2026-82021 Hermes Agent 0.18.2 < 0.19.0 MCP Catalog Supply Chain RCE via Mutable Branch Reference

Hermes Agent 0.18.2 prior to 0.19.0 contains a supply chain vulnerability in its bundled MCP catalog that allows a remote attacker to execute arbitrary code by compromising a third-party upstream repository referenced via a mutable branch rather than a pinned commit SHA. An attacker who compromis...

CVE-2026-82021 Hermes Agent 0.18.2 < 0.19.0 MCP Catalog Supply Chain RCE via Mutable Branch Reference

Hermes Agent 0.18.2 prior to 0.19.0 contains a supply chain vulnerability in its bundled MCP catalog that allows a remote attacker to execute arbitrary code by compromising a third-party upstream repository referenced via a mutable branch rather than a pinned commit SHA. An attacker who compromis...

EUVD-2026-67867

Hermes Agent 0.18.2 prior to 0.19.0 contains a supply chain vulnerability in its bundled MCP catalog that allows a remote attacker to execute arbitrary code by compromising a third-party upstream repository referenced via a mutable branch rather than a pinned commit SHA. An attacker who compromis...

CVE-2026-82021 Hermes Agent 0.18.2 < 0.19.0 MCP Catalog Supply Chain RCE via Mutable Branch Reference

Hermes Agent 0.18.2 prior to 0.19.0 contains a supply chain vulnerability in its bundled MCP catalog that allows a remote attacker to execute arbitrary code by compromising a third-party upstream repository referenced via a mutable branch rather than a pinned commit SHA. An attacker who compromis...

CVE-2026-82021

Hermes Agent 0.18.2 prior to 0.19.0 contains a supply chain vulnerability in its bundled MCP catalog that allows a remote attacker to execute arbitrary code by compromising a third-party upstream repository referenced via a mutable branch rather than a pinned commit SHA. An attacker who compromis...

CVE-2026-82021

Hermes Agent versions 0.18.2 prior to 0.19.0 contain a supply chain vulnerability in its bundled MCP catalog . A third-party upstream repository is referenced via a mutable branch rather than a pinned commit SHA, meaning an attacker who compromises that upstream repository can propagate malicious...

CVE-2026-82020 Hermes Agent 0.16.0 < 0.17.0 Credential Store Overwrite via File-Write Tool

Hermes Agent 0.16.0 prior to 0.17.0 contains an improper path restriction vulnerability that allows attackers who can influence ingested message content to overwrite the credential store by bypassing sensitive-path guards that excluded the auth.json file. Attackers can craft malicious messages...

EUVD-2026-67866

Hermes Agent 0.16.0 prior to 0.17.0 contains an improper path restriction vulnerability that allows attackers who can influence ingested message content to overwrite the credential store by bypassing sensitive-path guards that excluded the auth.json file. Attackers can craft malicious messages...

CVE-2026-82020

Hermes Agent versions 0.16.0 through prior to 0.17.0 contain an improper path restriction vulnerability. Sensitive-path guards that should protect the credential store failed to exclude the auth.json file , allowing an attacker who can influence ingested message content to craft a malicious messa...

CVE-2026-82020 Hermes Agent 0.16.0 < 0.17.0 Credential Store Overwrite via File-Write Tool

Hermes Agent 0.16.0 prior to 0.17.0 contains an improper path restriction vulnerability that allows attackers who can influence ingested message content to overwrite the credential store by bypassing sensitive-path guards that excluded the auth.json file. Attackers can craft malicious messages...

CVE-2026-82020

Hermes Agent 0.16.0 prior to 0.17.0 contains an improper path restriction vulnerability that allows attackers who can influence ingested message content to overwrite the credential store by bypassing sensitive-path guards that excluded the auth.json file. Attackers can craft malicious messages...