P4Verified

CVE-2026-53870: hermes-agent 0 to before 0.16.0

CVE-2026-53870. CVSS 3.1 base score 5.5 (MEDIUM, Vendor/CNA). EPSS 0.00154 (percentile 0.03929), scored 2026-10-06.

Affected technology

hermes-agent · 0 to before 0.16.0
NousResearch

Description’s affected range: before 0.16.0 creates response_store.db and webhook_subscriptions.json with world-readable permissions (mode 0o644)

Component: Not specified by the source

Attack conditions (Vendor/CNA, CVSS 4.0): Local · Low privileges required · No user interaction required

What an attacker can do

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. Vendor/CNA’s CVSS 4.0 assessment (base score 6.8/10) rates confidentiality impact as high; integrity and availability impact as none.

Published 2026-10-08 17:35:07.381683+00:00

CWE: CWE-276
CCR priority: 22.0 /100 (P4)
CVSS 3.1: 5.5 /10 · CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N · Vendor/CNA
EPSS: 0.00154 · percentile 0.03961 · 2026-10-08
KEV: no

Provenance

FIRST EPSS daily exploit-probability · Source record · observed 2026-10-08 17:36:22.845483+00:00 UTC
NVD CVE API 2.0 · Source record · observed 2026-10-08 17:32:11.049884+00:00 UTC

Stable permalink: https://cybercodered.org/item/cve-cve-2026-53870.html