{"cve":{"cve_id":"CVE-2026-55196","is_kev":false,"kev_date_added":null,"kev_vendor_project":null,"kev_product":null,"kev_vulnerability_name":null,"kev_short_description":null,"kev_required_action":null,"kev_due_date":null,"kev_known_ransomware":null,"kev_notes":null,"kev_cwes":null,"epss_score":0.00579,"epss_percentile":0.43095,"epss_as_of":"2026-06-23","description":"Hermes WebUI before 0.51.409 contains an authentication bypass vulnerability in passkey registration endpoints that allows unauthenticated remote attackers to register arbitrary passkeys. 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Vector","value":"N","value_label":"Network"},{"metric":"AC","name":"Attack Complexity","value":"L","value_label":"Low"},{"metric":"PR","name":"Privileges Required","value":"N","value_label":"None"},{"metric":"UI","name":"User Interaction","value":"N","value_label":"None"},{"metric":"S","name":"Scope","value":"U","value_label":"Unchanged"},{"metric":"C","name":"Confidentiality","value":"H","value_label":"High"},{"metric":"I","name":"Integrity","value":"H","value_label":"High"},{"metric":"A","name":"Availability","value":"N","value_label":"None"}]},"cvss_v4_decoded":{"version":"4.0","metrics":[{"metric":"AV","name":"Attack Vector","value":"N","value_label":"Network"},{"metric":"AC","name":"Attack Complexity","value":"L","value_label":"Low"},{"metric":"AT","name":"Attack Requirements","value":"P","value_label":"Present"},{"metric":"PR","name":"Privileges Required","value":"N","value_label":"None"},{"metric":"UI","name":"User Interaction","value":"N","value_label":"None"},{"metric":"VC","name":"Confidentiality (Vulnerable System)","value":"H","value_label":"High"},{"metric":"VI","name":"Integrity (Vulnerable System)","value":"H","value_label":"High"},{"metric":"VA","name":"Availability (Vulnerable System)","value":"N","value_label":"None"},{"metric":"SC","name":"Confidentiality (Subsequent System)","value":"N","value_label":"None"},{"metric":"SI","name":"Integrity (Subsequent System)","value":"N","value_label":"None"},{"metric":"SA","name":"Availability (Subsequent System)","value":"N","value_label":"None"}]},"affected":[{"vendor_slug":"hermes-webui","vendor_name":"hermes-webui","product_slug":"hermes-webui","product_name":"hermes-webui","version_start":"0","version_start_inclusive":true,"version_end":"0.51.409","version_end_inclusive":false,"cpe23_uri":"cve5:hermes-webui:hermes-webui:0:0.51.409"},{"vendor_slug":"hermes-webui","vendor_name":"hermes-webui","product_slug":"hermes-webui","product_name":"hermes-webui","version_start":"0.51.409","version_start_inclusive":true,"version_end":"0.51.409","version_end_inclusive":true,"cpe23_uri":"cve5:hermes-webui:hermes-webui:0.51.409:0.51.409"}],"exploit_refs":[],"news":[],"references":[{"url":"https://github.com/nesquena/hermes-webui/releases/tag/v0.51.442","source_type":"PATCH","tags":["patch"]},{"url":"https://github.com/nesquena/hermes-webui/pull/4171","source_type":"PATCH","tags":["patch"]},{"url":"https://github.com/nesquena/hermes-webui/pull/4267","source_type":"PATCH","tags":["patch"]},{"url":"https://github.com/nesquena/hermes-webui/commit/4d90577e25d5537cb07290eca3fb8abff3bab316","source_type":"PATCH","tags":["patch"]},{"url":"https://www.vulncheck.com/advisories/hermes-webui-unauthenticated-passkey-registration-via-authentication-bypass","source_type":"VENDOR_ADVISORY","tags":["advisory"]}],"timeline":[{"type":"published","at":"2026-06-17T17:58:56.543000Z","label":"CVE 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