Hermes Agent creates response_store.db and webhook_subscriptions.json with world-readable permissions (mode 0o644)
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.
Affected software
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| Platform | Package | Vulnerable versions | Fixed in |
|---|---|---|---|
| Python (PyPI) | hermes-agent | < 0.16.0 | 0.16.0 |
References
- https://nvd.nist.gov/vuln/detail/CVE-2026-53870
- https://github.com/NousResearch/hermes-agent/pull/30917
- https://github.com/NousResearch/hermes-agent/pull/31469
- https://github.com/NousResearch/hermes-agent/commit/3bace071bfadf2d2bec2ee048471a31ec920e3e8
- https://github.com/NousResearch/hermes-agent
- https://github.com/NousResearch/hermes-agent/releases/tag/v2026.6.5
- https://www.vulncheck.com/advisories/hermes-agent-sensitive-file-permission-vulnerability-in-store-files
- https://pypi.org/project/hermes-agent
- https://github.com/advisories/GHSA-99f9-j8r3-p853
- CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N- Weakness (CWE)
CWE-276- Platform
- Python (PyPI)
- Package
hermes-agent- Disclosed
- 17.06.2026
- Updated
- 11.10.2026 14:17
Sources and licenses
OSV / GitHub Advisory Database - PYSEC-2026-2511 - PyPA Advisory Database; CC BY 4.0
OSV / GitHub Advisory Database - GHSA-99f9-j8r3-p853 - CC BY 4.0
Vulnerability history: hermes-agent
All published vulnerabilities of this package (Python (PyPI)), newest first. Shows whether this is a one-off slip or a package that needs watching.
- Total entries
- 10
- First → latest
- 05.2026 06.2026
- Without a fix
- 2
- Exploited in attacks
- 0
Severity breakdown
- High 1
- Medium 6
- Low 3
Disclosures per year
- 2026: 10
-
Hermes Agent creates response_store.db and webhook_subscriptions.json with world-readable permissions (mode 0o644) this entry
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