CVE-2026-93355 – LiteLLM Weak JWT Authentication via Email-Based User Lookup

​CVE ID :CVE-2026-93355

Published : Sept. 28, 2026, 7:26 p.m. | 23 minutes ago

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.

Severity: 8.1 | HIGH

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