CVE-2026-53870

MEDIUM EPSS 1.5%
Published Jun 17, 20261w ago · Modified Jun 17, 20261w ago
6.8 CVSS 4.0
Medium
Find Similar
Published Jun 17, 2026 1w ago
Last Modified Jun 17, 2026 1w ago

Description

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 Details

Base Score
6.8
Exploitability
—
Impact
—
Vector string
CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Attack Vector Local
Attack Complexity Low
Privileges Required Low
User Interaction None
Scope X

Threat Intelligence

EPSS Exploit Probability
1.5% percentile
Exploit & Patch Status
No Known Exploit
No Patch Available

Weaknesses 1

CWE-276

References 5

  • github.com https://github.com/NousResearch/hermes-agent/commit/3bace071bfadf2d2bec2ee048471a31ec920e3e8
  • github.com https://github.com/NousResearch/hermes-agent/pull/30917
  • github.com https://github.com/NousResearch/hermes-agent/pull/31469
  • github.com https://github.com/NousResearch/hermes-agent/releases/tag/v2026.6.5
  • vulncheck.com https://www.vulncheck.com/advisories/hermes-agent-sensitive-file-permission-vulnerability-in-store-files

Remediation

No remediation data recorded yet

Check vendor advisories and the NVD entry for patch availability.