---
id: CVE-2026-93355
title: >-
  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
  authentic…
summary: >-
  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
  authentic…
severity: high
cvss: 8.1
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N'
cwe:
  - CWE-1390
  - CWE-290
vendor: BerriAI
product: litellm
affected:
  - litellm <= 1.102.1
  - litellm <= f4308bc124eebc783dfc51790ce8db27ed21ae00
published: '2026-09-28'
updated: '2026-09-30'
sourceUpdated: '2026-09-30T17:23:08.953'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-93355'
references:
  - url: >-
      https://www.ox.security/blog/litellm-an-ordinary-login-token-can-become-someone-elses-admin-account/
    label: disclosure@vulncheck.com
  - url: >-
      https://www.vulncheck.com/advisories/litellm-weak-jwt-authentication-via-email-based-user-lookup
    label: disclosure@vulncheck.com
  - url: >-
      https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-93355.json
  - url: 'https://access.redhat.com/security/cve/CVE-2026-93355'
  - url: 'https://bugzilla.redhat.com/show_bug.cgi?id=2542631'
  - url: 'https://www.cve.org/CVERecord?id=CVE-2026-93355'
  - url: 'https://nvd.nist.gov/vuln/detail/CVE-2026-93355'
  - url: 'https://access.redhat.com/errata/RHSA-2026:84734'
tags:
  - nvd
  - cve.org
  - exploit-available
  - csaf
  - vex
  - red-hat
epss: 0.00273
epssPercentile: 0.19602
exploitAvailable: true
ssvc:
  exploitation: poc
  automatable: 'no'
  technicalImpact: total
  timestamp: '2026-09-29T14:01:26.547066Z'
ingestedAt: '2026-09-28T20:20:05.661Z'
exploits:
  github: 1
  githubRepos:
    - 'https://github.com/InertFluid/cve-2026-93355-lab'
  checkedAt: '2026-10-27T19:23:18.900Z'
patched:
  - openshift_ai 3.4
---

## Overview

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.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.

## Vendor advisories

- **Red Hat VEX** · Important · affected: Exploit Intelligence, Lightspeed Core, Red Hat Ansible Automation Platform 2, Red Hat OpenShift AI (RHOAI) · no fix planned: Exploit Intelligence, Lightspeed Core, Red Hat Ansible Automation Platform 2, Red Hat OpenShift AI (RHOAI) · updated 2026-10-19 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-93355.json)
- **RHSA-2026:84734** · Red Hat · fixed in: Red Hat OpenShift AI 3.4 · released 2026-10-19 · [advisory](https://access.redhat.com/errata/RHSA-2026:84734)