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.

Attack Vector Local

Attack Complexity Low

Privileges Required Low

Attack Requirements None

User Interaction None

Vulnerable System Confidentiality Impact High

Vulnerable System Integrity Impact None

Vulnerable System Availability Impact None

Subsequent System Confidentiality Impact None

Subsequent System Integrity Impact None

Subsequent System Availability Impact None

Attack Vector Local

Attack Complexity Low

Privileges Required Low

Scope Unchanged

Confidentiality Impact High

Integrity Impact None

Availability Impact None

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

The EPSS score is 0.00108.

Exploitation poc

Automatable no

Technical Impact partial

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions
NousResearch hermes-agent unaffected
Version Status Constraints
0 affected < 0.16.0
0.16.0 unaffected —

No data.

No data.

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Vendors Products
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Hermes-agent Subscribe

Project Subscriptions

Vendors Products
Nousresearch Subscribe
Hermes-agent Subscribe
Advisories

No advisories yet.

Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

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

Thu, 18 Jun 2026 20:45:00 +0000

Type Values Removed Values Added
First Time appeared Nousresearch
Nousresearch hermes-agent
Vendors & Products Nousresearch
Nousresearch hermes-agent

Thu, 18 Jun 2026 04:45:00 +0000

Type Values Removed Values Added
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.
Title Hermes Agent < 0.16.0 - Sensitive File Permission Vulnerability in Store Files
Weaknesses CWE-276
References
Metrics cvssV3_1

{'score': 5.5, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N'}

cvssV4_0

{'score': 6.8, 'vector': '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'}

ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'poc', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: VulnCheck

Published:

Updated: 2026-06-17T18:39:35.273Z

Reserved: 2026-06-10T21:23:54.283Z

Link: CVE-2026-53870

cve-icon Vulnrichment

Updated: 2026-06-17T18:37:21.459Z

cve-icon NVD

No data.

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-06-18T20:30:05Z

Weaknesses