Answer in brief
CVE-2026-53870 records a Medium severity (CVSS 6.8) vulnerability in Hermes Agent < 0.16.0 - Sensitive File Permission Vulnerability in Store Files. The current sources do not mark it as known exploited. The current feed maps NousResearch/hermes-agent (generic), hermes-agent (pip). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
CVSS is 6.8. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps NousResearch/hermes-agent (generic), hermes-agent (pip). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| NousResearch/hermes-agentgeneric | >=0 <0.16.0 | 0.16.0 |
| hermes-agentpip | <0.16.0 | 0.16.0 |
Published upstream
Jun 17, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Oct 8, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Jun 19, 2026
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.
Quoted source text, attributed separately from HOL analysis.