---
id: CVE-2026-11322
title: Hermes WebUI before 0.51.221 Path Traversal via Symlink Workspace Bypass
summary: >-
  Hermes WebUI prior to v0.51.221 contains a path traversal vulnerability that
  allows attackers to escape the workspace boundary by supplying symlinks that
  resolve to files or directories outside the designated workspace root.
  Attackers ca…
severity: medium
cvss: 6.5
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N'
cvssSource: cna
cwe:
  - CWE-59
vendor: nesquena
product: Hermes WebUI
affected:
  - hermes_webui < 0.51.221
ssvc:
  exploitation: poc
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-06-05T20:06:29.352173Z'
exploitAvailable: true
published: '2026-06-04'
updated: '2026-11-08'
sourceUpdated: '2026-11-08T14:00:54.835Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-11322'
references:
  - url: 'https://github.com/nesquena/hermes-webui/pull/3398'
  - url: >-
      https://github.com/nesquena/hermes-webui/commit/7c48c376299b8058fd35127a59aefadded7e4a92
  - url: >-
      https://www.vulncheck.com/advisories/hermes-webui-before-path-traversal-via-symlink-workspace-bypass
tags:
  - cve.org
  - exploit-available
epss: 0.00323
epssPercentile: 0.25516
ingestedAt: '2026-11-08T14:51:22.480Z'
---

## Overview

Hermes WebUI prior to v0.51.221 contains a path traversal vulnerability that allows attackers to escape the workspace boundary by supplying symlinks that resolve to files or directories outside the designated workspace root. Attackers can exploit the workspace file and listing APIs, which resolve symlink targets without enforcing that the final path remains within the workspace, to read external host files accessible to the server process and disclose sensitive data such as SSH keys, cloud credentials, or application tokens.

## Affected

- `hermes_webui < 0.51.221`

## Remediation

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