CVE-2026-53870Hermes Agent < 0.16.0 - Sensitive File Permission Vulnerability in Store Files
Updated under an hour ago ()
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It affects NousResearch hermes-agent. Add what you run to find out whether that includes you.
No exploitation reported and no EPSS estimate yet.
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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.
- CVSS
- 5.5 MEDIUM (v3.1, CNA)CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
- Weakness (CWE)
- CWE-276
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- VulnCheck
- NVD analysis
- Deferred
- Record last updated
- Oct 8, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
NousResearch hermes-agent nousresearch:hermes_agent (from the name) | before 0.16.0; 0.16.0 not affected | CNA record |
References
- https://github.com/NousResearch/hermes-agent/releases/tag/v2026.6.5release-notes
- https://github.com/NousResearch/hermes-agent/pull/30917issue-tracking
- https://github.com/NousResearch/hermes-agent/pull/31469issue-tracking
- https://github.com/NousResearch/hermes-agent/commit/3bace071bfadf2d2bec2ee048471a31ec920e3e8patch
- https://www.vulncheck.com/advisories/hermes-agent-sensitive-file-permission-vulnerability-in-store-filesthird-party-advisory
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.