CVE-2026-35029

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.

CVSS 4.0

8.7CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:L/SI:L/SA:N

CVSS 3.1

8.8CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

EPSS

39% chance of exploitation in the next 30 days; higher than 98% of CVEs (scores of 2026-10-25)

CWEs

CWE-863, CWE-425

Published

2026-04-06

Modified

2026-10-23

Record from

the NVD, synced 2026-10-24

Affected

• litellm:litellm

Packages (OSV)

References

• https://github.com/BerriAI/litellm/security/advisories/GHSA-53mr-6c8q-9789
• http://seclists.org/fulldisclosure/2026/Apr/17
• https://access.redhat.com/errata/RHSA-2026:13545
• https://access.redhat.com/errata/RHSA-2026:28960
• https://access.redhat.com/errata/RHSA-2026:30056

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