Denial of Service Vulnerability in NousResearch Hermes-Agent HTTP API
CVE-2026-14626

5.3MEDIUM

Key Information:

Vendor: Nousresearch
Status: Hermes-agent
Vendor: CVE Published:; 4 July 2026

🔔 Create Nousresearch Vulnerability Alert

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-14626?

A vulnerability exists in the NousResearch hermes-agent, specifically within the AIAgent.run_conversation function of the run_agent.py file in the HTTP API component. This flaw can be exploited by manipulating the 'todos' argument, leading to a denial of service condition. The attack can be initiated remotely, increasing the risk of potential exploitation. Despite early disclosure of this issue to the vendor, no response was received, underscoring the importance of addressing such security weaknesses.

Affected Version(s)

hermes-agent 2026.4.0

hermes-agent 2026.4.1

hermes-agent 2026.4.2

Exploit Proof of Concept (PoC)

PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.

CVE-2026-14626 - Proof of Concept