MEDIUM5.5
PYSEC-2026-2511
Hermes Agent creates response_store.db and webhook_subscriptions.json with world-readable permissions (mode 0o644)
Quick fix
PYSEC-2026-2511 — hermes-agent: upgrade to the fixed version with the command below.
pip install --upgrade 'hermes-agent>=0.16.0'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
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]
- https://pypi.org/project/hermes-agent[PACKAGE]
- https://github.com/advisories/GHSA-99f9-j8r3-p853[ADVISORY]