CVE-2026-53871
Hermes WebUI < 0.51.368 - Profile-Scoped Authorization Bypass via Forged hermes_profile Cookie
CVSS Score
8.1
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-565 |
| Vendor | nesquena |
| Product | hermes-webui |
| Published | Jun 17, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
None
Affected Versions
nesquena / hermes-webui
0 < 0.51.368
References
github.com: https://github.com/nesquena/hermes-webui/releases/tag/v0.51.368 github.com: https://github.com/nesquena/hermes-webui/pull/4023 github.com: https://github.com/nesquena/hermes-webui/pull/4036 github.com: https://github.com/nesquena/hermes-webui/commit/9e96f5f6adf93b6d1e27ebddfb4d2833ca06ff3b vulncheck.com: https://www.vulncheck.com/advisories/hermes-webui-profile-scoped-authorization-bypass-via-forged-hermes-profile-cookie
Credits
Chia Min Jun Lennon