CVE-2026-53871
HIGHHermes WebUI < 0.51.368 - Profile-Scoped Authorization Bypass via Forged hermes_profile Cookie
Title source: cnaDescription
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.
References (5)
Core 5
Core References
Release Notes release-notes
Release Notes
https://github.com/nesquena/hermes-webui/releases/tag/v0.51.368
Technical Description technical-description
Researcher Pull Request
https://github.com/nesquena/hermes-webui/pull/4023
Issue Tracking issue-tracking
Maintainer Pull Request
https://github.com/nesquena/hermes-webui/pull/4036
Patch patch
https://github.com/nesquena/hermes-webui/commit/9e96f5f6adf93b6d1e27ebddfb4d2833ca06ff3b
Third Party Advisory third-party-advisory
https://www.vulncheck.com/advisories/hermes-webui-profile-scoped-authorization-bypass-via-forged-hermes-profile-cookie
Scores
CVSS v3
8.1
EPSS
0.0037
EPSS Percentile
28.2%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
CISA SSVC
Vulnrichment
Exploitation
none
Automatable
no
Technical Impact
total
Details
CWE
CWE-565
Status
published
Products (2)
nesquena/hermes-webui
< 0.51.368
nesquena/hermes-webui
0.51.368
Published
Jun 17, 2026
Tracked Since
Jun 18, 2026