CVE-2026-53870 PUBLISHED

Hermes Agent < 0.16.0 - Sensitive File Permission Vulnerability in Store Files

Assigner: VulnCheck
Reserved: 10.06.2026 Published: 17.06.2026 Updated: 17.06.2026

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.

CVSS 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
CVSS Score: 6.8

Exploitability Metrics		Vulnerable System Impact Metrics		Subsequent System Impact Metrics
Attack Vector	Local	Confidentiality	High	Confidentiality	None
Attack Complexity	Low	Integrity	None	Integrity	None
Attack Requirements	None	Availability	None	Availability	None
Privileges Required	Low
User Interaction	None

CVSS 4.0

CVSS Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
CVSS Score: 5.5

Attack Vector	Local	Scope	Unchanged
Attack Complexity	Low	Confidentiality Impact	High
Privileges Required	Low	Integrity Impact	None
User Interaction	None	Availability Impact	None

CVSS 3.1

Product Status

Vendor	NousResearch
Product	hermes-agent
Versions	Default: unaffected affected from 0 to 0.16.0 (excl.) Version 0.16.0 is unaffected

CVE-2026-53870 PUBLISHED

Hermes Agent < 0.16.0 - Sensitive File Permission Vulnerability in Store Files

Metrics

Product Status

Credits

References

Problem Types