Hermes WebUI before 0.51.307 contains an authentication bypass vulnerability that allows unauthenticated remote attackers to circumvent local-origin IP restrictions on onboarding endpoints by supplying a spoofed X-Forwarded-For header with a loopback address. Attackers can exploit this bypass to perform server-side request forgery against internal services including cloud metadata endpoints, overwrite LLM provider configuration and API keys with attacker-controlled values, or initiate OAuth device-code flows to obtain persistent access tokens stored in auth.json.
Metrics
Affected Vendors & Products
References
History
Tue, 14 Jul 2026 21:45:00 +0000
| Type | Values Removed | Values Added |
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| First Time appeared |
Get-hermes
Get-hermes hermes Web Ui |
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| CPEs | cpe:2.3:a:get-hermes:hermes_web_ui:*:*:*:*:*:*:*:* | |
| Vendors & Products |
Get-hermes
Get-hermes hermes Web Ui |
Fri, 10 Jul 2026 21:30:00 +0000
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| Metrics |
ssvc
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Thu, 09 Jul 2026 23:00:00 +0000
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| First Time appeared |
Nesquena
Nesquena hermes-webui |
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| Vendors & Products |
Nesquena
Nesquena hermes-webui |
Thu, 09 Jul 2026 21:45:00 +0000
| Type | Values Removed | Values Added |
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| Description | Hermes WebUI before 0.51.307 contains an authentication bypass vulnerability that allows unauthenticated remote attackers to circumvent local-origin IP restrictions on onboarding endpoints by supplying a spoofed X-Forwarded-For header with a loopback address. Attackers can exploit this bypass to perform server-side request forgery against internal services including cloud metadata endpoints, overwrite LLM provider configuration and API keys with attacker-controlled values, or initiate OAuth device-code flows to obtain persistent access tokens stored in auth.json. | |
| Title | Hermes WebUI < 0.51.307 Authentication Bypass via X-Forwarded-For Header Spoofing | |
| Weaknesses | CWE-348 | |
| References |
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| Metrics |
cvssV3_1
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Status: PUBLISHED
Assigner: VulnCheck
Published: 2026-07-09T21:30:17.166Z
Updated: 2026-07-14T21:34:49.210Z
Reserved: 2026-06-29T14:13:18.384Z
Link: CVE-2026-58122
Updated: 2026-07-10T19:13:01.282Z
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