---
id: CVE-2026-6829
title: nesquena hermes-webui Arbitrary Workspace Directory Access
summary: >-
  nesquena hermes-webui contains a trust-boundary failure vulnerability that
  allows authenticated attackers to set or change a session workspace to an
  arbitrary existing directory on disk by manipulating workspace path parameters
  in endpoi…
severity: medium
cvss: 6.3
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L'
cvssSource: cna
cwe:
  - CWE-22
vendor: nesquena
product: hermes-webui
affected:
  - 'hermes-webui < PR #416'
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-04-22T12:17:52.016952Z'
published: '2026-04-21'
updated: '2026-11-08'
sourceUpdated: '2026-11-08T14:08:13.786Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-6829'
references:
  - url: 'https://github.com/nesquena/hermes-webui/pull/416'
    label: Pull Request
  - url: >-
      https://github.com/nesquena/hermes-webui/commit/2a7a5ddfaf39e3b0094b7ac37e9f1dbcf40a3918
    label: Patch Commit
  - url: 'https://github.com/nesquena/hermes-webui/releases/tag/v0.50.34'
    label: hermes-webui 0.50.34 Release Notes
  - url: >-
      https://www.vulncheck.com/advisories/nesquena-hermes-webui-arbitrary-workspace-directory-access
tags:
  - cve.org
epss: 0.0026
epssPercentile: 0.17796
ingestedAt: '2026-11-08T14:51:22.264Z'
---

## Overview

nesquena hermes-webui contains a trust-boundary failure vulnerability that allows authenticated attackers to set or change a session workspace to an arbitrary existing directory on disk by manipulating workspace path parameters in endpoints such as /api/session/new, /api/session/update, /api/chat/start, and /api/workspaces/add. Attackers can repoint a session workspace to a directory outside the intended trusted root and then use ordinary file read and write APIs to access or modify files outside the intended workspace boundary within the permissions of the hermes-webui process.

## Affected

- `hermes-webui < PR #416`

## Remediation

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