CVE-2026-53870

Medium

Description

Hermes Agent before 0.16.0 creates response_store.db and webhook_subscriptions.json with world-readable permissions (mode 0o644), exposing conversation history and HMAC secrets to local users. Attackers with local filesystem access can read these files directly to obtain sensitive data including conversation history, tool payloads, prompts, and per-route HMAC secrets.

SeverityMedium

CVSS5.5

Exploit probability—

ProductHermes-agent

PublishedJun 17, 2026

First seenJun 17, 2026

Weakness typeCWE-276CWE-276

How to fix

Update

hermes-agent0.16.0 or later

Patches

github.com/NousResearch/hermes-agent/commit/3bace071bfadf2d2bec2ee048471a31ec920e3e8

Vendor advisories

github.com/NousResearch/hermes-agent/releases/tag/v2026.6.5

Affected products

Product	Affected versions	Fixed in
hermes-agentPyPI	v < 0.16.0	0.16.0

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