{"cve":{"cve_id":"CVE-2026-93355","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":0.00273,"epss_percentile":0.18391,"epss_as_of":"2026-10-15","description":"LiteLLM contains a weak authentication vulnerability that allows an attacker holding a valid JWT from the configured identity provider to authenticate as any existing user by exploiting an email-based fallback lookup in the JWT authentication flow without verifying the email_verified claim. Attackers can present a token with an unverified email address matching a victim's account to inherit the victim's role, including proxy_admin privileges, and permanently overwrite the victim's stored identity binding to retain persistent unauthorized access to administrative endpoints exposing API keys and user management.","published_at":"2026-09-28T19:26:01.155000Z","last_modified_at":"2026-09-30T17:23:08.953000Z","cvss_v3_score":8.1,"cvss_v3_vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N","cvss_v3_severity":"HIGH","cvss_v4_score":7.6,"cvss_v4_vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N","cvss_v4_severity":"HIGH","ssvc_decision":null,"ssvc_exploitation":null,"ssvc_automatable":null,"ssvc_technical_impact":null,"cwes":["CWE-1390"],"nvd_references":["https://www.ox.security/blog/litellm-an-ordinary-login-token-can-become-someone-elses-admin-account/","https://www.vulncheck.com/advisories/litellm-weak-jwt-authentication-via-email-based-user-lookup"],"vuln_status":"Awaiting Analysis","trending_score":null,"is_trending":false,"has_trended":false,"trended_number_one":false,"trending_peak_score":null,"trending_peak_rank":null,"started_trending_at":null,"trended_number_one_at":null,"summary_generated":null,"summary_generated_at":null,"summary_model":null,"created_at":"2026-09-28T19:38:54.189143Z","updated_at":"2026-10-02T11:10:38.202748Z"},"effective_severity":"HIGH","badges":[],"impact_analysis":[],"cvss_v3_decoded":{"version":"3.1","metrics":[{"metric":"AV","name":"Attack Vector","value":"N","value_label":"Network"},{"metric":"AC","name":"Attack Complexity","value":"L","value_label":"Low"},{"metric":"PR","name":"Privileges Required","value":"L","value_label":"Low"},{"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":"L","value_label":"Low"},{"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":"berriai","vendor_name":"BerriAI","product_slug":"litellm","product_name":"litellm","version_start":"0","version_start_inclusive":true,"version_end":"1.102.1","version_end_inclusive":true,"cpe23_uri":"cve5:berriai:litellm:0:1.102.1"},{"vendor_slug":"berriai","vendor_name":"BerriAI","product_slug":"litellm","product_name":"litellm","version_start":"0","version_start_inclusive":true,"version_end":"f4308bc124eebc783dfc51790ce8db27ed21ae00","version_end_inclusive":true,"cpe23_uri":"cve5:berriai:litellm:0:f4308bc124eebc783dfc51790ce8db27ed21ae00"}],"exploit_refs":[],"news":[],"references":[{"url":"https://www.ox.security/blog/litellm-an-ordinary-login-token-can-become-someone-elses-admin-account/","source_type":"MISC","tags":[]},{"url":"https://www.vulncheck.com/advisories/litellm-weak-jwt-authentication-via-email-based-user-lookup","source_type":"VENDOR_ADVISORY","tags":["advisory"]}],"timeline":[{"type":"published","at":"2026-09-28T19:26:01.155000Z","label":"CVE published","source":null}]}