VULNERABILITY INTELLIGENCE

CVE-2026-35029

CVSS score8.8 HIGH
EPSS probability38.61%
CISA KEVNot currently listed
Published2026-04-06
Last modified2026-10-23
CVSS vectorCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Description

LiteLLM is a proxy server (AI Gateway) to call LLM APIs in OpenAI (or native) format. Prior to 1.83.0, the /config/update endpoint does not enforce admin role authorization. A user who is already authenticated into the platform can then use this endpoint to modify proxy configuration and environment variables, register custom pass-through endpoint handlers pointing to attacker-controlled Python code, achieving remote code execution, read arbitrary server files by setting UI_LOGO_PATH and fetching via /get_image, and take over other privileged accounts by overwriting UI_USERNAME and UI_PASSWORD environment variables. Fixed in v1.83.0.

Weakness classification

  • security-advisories@github.com: CWE-863
  • 0b0ca135-0b70-47e7-9f44-1890c2a1c46c: CWE-425

Primary references