{"id":81762,"date":"2026-07-10T01:00:17","date_gmt":"2026-07-09T21:30:17","guid":{"rendered":"https:\/\/afaghhosting.net\/blog\/cve-2026-58122-hermes-webui-0-51-307-authentication-bypass-via-x-forwarded-for-header-spoofing\/"},"modified":"2026-07-10T01:00:17","modified_gmt":"2026-07-09T21:30:17","slug":"cve-2026-58122-hermes-webui-0-51-307-authentication-bypass-via-x-forwarded-for-header-spoofing","status":"publish","type":"post","link":"https:\/\/afaghhosting.net\/blog\/cve-2026-58122-hermes-webui-0-51-307-authentication-bypass-via-x-forwarded-for-header-spoofing\/","title":{"rendered":"CVE-2026-58122 &#8211; Hermes WebUI &lt; 0.51.307 Authentication Bypass via X-Forwarded-For Header Spoofing"},"content":{"rendered":"<p>CVE ID :CVE-2026-58122<\/p>\n<p>  Published : July 9, 2026, 9:30 p.m. | 18\u00a0minutes ago<\/p>\n<p>  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.<\/p>\n<p>  Severity: 9.3 | CRITICAL<\/p>\n<p>  Visit the link for more details, such as CVSS details, affected products, timeline, and more&#8230;\u00a0<\/p>\n","protected":false},"excerpt":{"rendered":"<p>CVE ID :CVE-2026-58122 Published : July 9, 2026, 9:30 p.m. | 18\u00a0minutes ago 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 &hellip;<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[26],"tags":[],"class_list":["post-81762","post","type-post","status-publish","format-standard","hentry","category-vulnerability"],"_links":{"self":[{"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/posts\/81762","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/comments?post=81762"}],"version-history":[{"count":0,"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/posts\/81762\/revisions"}],"wp:attachment":[{"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/media?parent=81762"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/categories?post=81762"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/tags?post=81762"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}