---
id: CVE-2026-53871
title: >-
  Hermes WebUI before 0.51.368 contains an authorization bypass vulnerability in
  the get_profile_cookie() function that accepts unauthenticated profile names
  from the hermes_profile cookie
summary: >-
  Hermes WebUI before 0.51.368 contains an authorization bypass vulnerability in
  the get_profile_cookie() function that accepts unauthenticated profile names
  from the hermes_profile cookie. An authenticated attacker can forge the
  hermes_pr…
severity: high
cvss: 8.1
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N'
cwe:
  - CWE-565
vendor: nesquena
product: hermes-webui
affected:
  - hermes-webui < 0.51.368
published: '2026-06-17'
updated: '2026-09-17'
sourceUpdated: '2026-09-17T18:16:45.297'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-53871'
references:
  - url: >-
      https://github.com/nesquena/hermes-webui/commit/9e96f5f6adf93b6d1e27ebddfb4d2833ca06ff3b
    label: disclosure@vulncheck.com
  - url: 'https://github.com/nesquena/hermes-webui/pull/4023'
    label: disclosure@vulncheck.com
  - url: 'https://github.com/nesquena/hermes-webui/pull/4036'
    label: disclosure@vulncheck.com
  - url: 'https://github.com/nesquena/hermes-webui/releases/tag/v0.51.368'
    label: disclosure@vulncheck.com
  - url: >-
      https://www.vulncheck.com/advisories/hermes-webui-profile-scoped-authorization-bypass-via-forged-hermes-profile-cookie
    label: disclosure@vulncheck.com
tags:
  - nvd
  - cve.org
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: total
  timestamp: '2026-06-18T13:50:12.561304Z'
epss: 0.00502
epssPercentile: 0.4038
ingestedAt: '2026-09-17T18:25:15.969Z'
---

## Overview

Hermes WebUI before 0.51.368 contains an authorization bypass vulnerability in the get_profile_cookie() function that accepts unauthenticated profile names from the hermes_profile cookie. An authenticated attacker can forge the hermes_profile cookie value to bypass profile-scoped authorization checks and access sessions, files, and resources across different profiles.

## Remediation

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