RCE via /config/update in LiteLLM <1.83.0
CVE-2026-35029 Published on April 6, 2026

LiteLLM affected by privilege escalation via unrestricted proxy configuration endpoint
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.

NVD

Vulnerability Analysis

CVE-2026-35029 can be exploited with network access, and requires small amount of user privileges. This vulnerability is considered to have a low attack complexity. The potential impact of an exploit of this vulnerability is considered to be very high.

Attack Vector:
NETWORK
Attack Complexity:
LOW
Privileges Required:
LOW
User Interaction:
NONE
Scope:
UNCHANGED
Confidentiality Impact:
HIGH
Integrity Impact:
HIGH
Availability Impact:
HIGH

Weakness Types

What is an AuthZ Vulnerability?

The software performs an authorization check when an actor attempts to access a resource or perform an action, but it does not correctly perform the check. This allows attackers to bypass intended access restrictions.

CVE-2026-35029 has been classified to as an AuthZ vulnerability or weakness.

What is a forced browsing Vulnerability?

The web application does not adequately enforce appropriate authorization on all restricted URLs, scripts, or files. Web applications susceptible to direct request attacks often make the false assumption that such resources can only be reached through a given navigation path and so only apply authorization at certain points in the path.

CVE-2026-35029 has been classified to as a forced browsing vulnerability or weakness.


Products Associated with CVE-2026-35029

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Red Hat Ansible Automation Platform
 
Red Hat Openshift Ai
 
Red Hat Lightspeed Core
 

Affected Versions

BerriAI litellm: Red Hat Ansible Automation Platform 2.6: Red Hat OpenShift AI 2.25: Red Hat OpenShift AI 3.3: Red Hat Lightspeed Core: Red Hat OpenShift AI (RHOAI):

Exploit Probability

EPSS
27.19%
Percentile
97.80%

EPSS (Exploit Prediction Scoring System) scores estimate the probability that a vulnerability will be exploited in the wild within the next 30 days. The percentile shows you how this score compares to all other vulnerabilities.