---
id: CVE-2026-82020
title: >-
  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 t…
summary: >-
  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 t…
severity: medium
cvss: 6.8
cvssVector: 'CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:N'
cwe:
  - CWE-552
published: '2026-08-28'
updated: '2026-09-08'
sourceUpdated: '2026-09-08T20:23:49.880'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-82020'
references:
  - url: >-
      https://github.com/NousResearch/hermes-agent/commit/2b67e96aec2aa2abd5e94b544cda8e564c75f9f5
    label: disclosure@vulncheck.com
  - url: >-
      https://github.com/NousResearch/hermes-agent/commit/da28d5d113956dcf803d5cff552a120740a96a59
    label: disclosure@vulncheck.com
  - url: 'https://github.com/NousResearch/hermes-agent/pull/45821'
    label: disclosure@vulncheck.com
  - url: 'https://github.com/NousResearch/hermes-agent/releases/tag/v2026.6.19'
    label: disclosure@vulncheck.com
  - url: >-
      https://www.vulncheck.com/advisories/hermes-agent-credential-store-overwrite-via-file-write-tool
    label: disclosure@vulncheck.com
tags:
  - nvd
epss: 0.00435
epssPercentile: 0.35103
ingestedAt: '2026-09-08T21:11:12.287Z'
---

## Overview

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.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.