MEDIUM 5.5
GHSA-99f9-j8r3-p853
Hermes Agent creates response_store.db and webhook_subscriptions.json with world-readable permissions (mode 0o644)
Details
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.
Are you affected?
Enter the version of the package you're using.
Affected packages
PyPI / hermes-agent
Introduced in:
0 Fixed in: 0.16.0 Fix
pip install --upgrade 'hermes-agent>=0.16.0' References
- https://nvd.nist.gov/vuln/detail/CVE-2026-53870 [ADVISORY]
- https://github.com/NousResearch/hermes-agent/pull/30917 [WEB]
- https://github.com/NousResearch/hermes-agent/pull/31469 [WEB]
- https://github.com/NousResearch/hermes-agent/commit/3bace071bfadf2d2bec2ee048471a31ec920e3e8 [WEB]
- https://github.com/NousResearch/hermes-agent [PACKAGE]
- https://github.com/NousResearch/hermes-agent/releases/tag/v2026.6.5 [WEB]
- https://www.vulncheck.com/advisories/hermes-agent-sensitive-file-permission-vulnerability-in-store-files [WEB]