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CVE-2026-35029PYSEC-2026-2597GHSA-53MR-6C8Q-9789

LiteLLM affected by privilege escalation via unrestricted proxy configuration endpoint

Published
Last modified
published
Not listed in CISA KEV
Fix
Fixed in 1.83.0
1 proof of concept on GitHub, 1 Nuclei template
  • Exploitation: none
  • Automatable: no
  • Technical impact: total

Summary

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.

Timeline

  1. CVE published
  2. CISA SSVC assessment

    Exploitation: none · Automatable: no · Technical impact: total

  3. Record last updated
  4. EPSS reached 10%

    FIRST estimates at least a 10% chance of exploitation in the next 30 days

Affected versions

  • BerriAI litellm

    fixed in 1.83.0

  • litellmPyPI

    fixed in 1.83.0

  • litellmPyPI

    fixed in 1.83.0

References 3

GitHub · BerriAI/litellm

GitHub · projectdiscovery/nuclei-templates

GitHub · learner202649/CVE-2026-35029-PoC