Server-Side Request Forgery Vulnerability in NousResearch Hermes-Agent
CVE-2026-18775

5.3MEDIUM

Key Information:

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

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👾 Exploit Exists🟡 Public PoC

What is CVE-2026-18775?

A server-side request forgery vulnerability has been identified in the NousResearch hermes-agent up to version 0.16.0. This issue specifically affects the browser_snapshot function within the tools/browser_tool.py component, enabling an attacker to manipulate requests made by the server to internal resources. The exploit can be initiated remotely, posing a substantial risk as it allows unauthorized access to potentially sensitive information. Despite early disclosure to the vendor, no response has been noted, increasing the urgency for users to address this vulnerability.

Affected Version(s)

hermes-agent 0.1

hermes-agent 0.2

hermes-agent 0.3

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-2026-18775 - Proof of Concept