CVE-2026-82020

Medium

Description

Hermes Agent 0.16.0 prior to 0.17.0 contains an improper path restriction vulnerability that allows attackers who can influence ingested message content to overwrite the credential store by bypassing sensitive-path guards that excluded the auth.json file. Attackers can craft malicious messages directing the agent's file-write tooling to overwrite the credential store without triggering any path-based protection, enabling credential tampering or unauthorized access.

SeverityMedium

CVSS6.8

Exploit probability—

ProductNousresearch Hermes-agent

PublishedAug 28, 2026

First seenAug 28, 2026

Weakness typeCWE-552CWE-552

How to fix

Update

NousResearch hermes-agent0.17.0, 2026.6.19 or later

Patches

Vendor advisories

github.com/NousResearch/hermes-agent/releases/tag/v2026.6.19

Affected products

Product	Affected versions	Fixed in
NousResearch hermes-agent	0.16.0 ≤ v < 0.17.0, 2026.6.5 ≤ v < 2026.6.19	0.17.0, 2026.6.19

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