CVE-2026-53871
Hermes WebUI < 0.51.368 - Profile-Scoped Authorization Bypass via Forged hermes_profile Cookie
- State
- Published
- Severity
- 8.6 High
- Published
- Jun 17, 2026
- Updated
- Sep 17, 2026
- Reserved
- Jun 10, 2026
Description
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 8.6 High | CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N | VulnCheck |
| 3.1 | 8.1 High | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N | VulnCheck |
Weaknesses
- CWE-565 Reliance on Cookies without Validation and Integrity Checking
Affected Products
| Product | Versions |
|---|---|
hermes-webuinesquena |
|
References
- hermes-webui v0.51.368 Release Notesrelease-notes
- Researcher Pull Requestissue-trackingpatch
- Maintainer Pull Requestissue-trackingpatch
- https://github.com/nesquena/hermes-webui/commit/9e96f5f6adf93b6d1e27ebddfb4d2833ca06ff3bpatch
- https://www.vulncheck.com/advisories/hermes-webui-profile-scoped-authorization-bypass-via-forged-hermes-profile-cookiethird-party-advisory
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