CVE-2026-35029
LiteLLM affected by privilege escalation via unrestricted proxy configuration endpoint
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.
INFO
Published Date :
April 6, 2026, 5:17 p.m.
Last Modified :
April 29, 2026, 8:16 p.m.
Remotely Exploit :
Yes !
Source :
[email protected]
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 3.1 | HIGH | [email protected] | ||||
| CVSS 4.0 | HIGH | [email protected] |
Solution
- Update LiteLLM to version 1.83.0 or later.
- Review and audit all configuration changes.
- Restrict access to the /config/update endpoint.
- Implement robust access controls for administrative functions.
Public PoC/Exploit Available at Github
CVE-2026-35029 has a 1 public
PoC/Exploit available at Github.
Go to the Public Exploits tab to see the list.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-35029.
| URL | Resource |
|---|---|
| https://github.com/BerriAI/litellm/security/advisories/GHSA-53mr-6c8q-9789 | Mitigation Vendor Advisory |
| http://seclists.org/fulldisclosure/2026/Apr/17 |
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-35029 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-35029
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Identity Continuity Guardrails for Agentic Systems: An open-source implementation of the Nested Agentic Architecture (NAA) for the autonomous Agentic Web.
agentic-ai ai ai-agent ai-safety autonomus-agents cybersecurity guardrails
Python CSS HTML JavaScript
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-35029 vulnerability anywhere in the article.
-
Daily CyberSecurity
LiteLLM Under Fire: Triple Threat Vulnerabilities Expose AI Gateways to Total Takeover
LiteLLM, the popular open-source library used to provide a unified interface for over 100 Large Language Models (LLMs) like OpenAI and Anthropic, has been hit with a series of critical security disclo ... Read more
The following table lists the changes that have been made to the
CVE-2026-35029 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
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CVE Modified by af854a3a-2127-422b-91ae-364da2661108
Apr. 29, 2026
Action Type Old Value New Value Added Reference http://seclists.org/fulldisclosure/2026/Apr/17 -
Initial Analysis by [email protected]
Apr. 07, 2026
Action Type Old Value New Value Added CVSS V3.1 AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H Added CPE Configuration OR *cpe:2.3:a:litellm:litellm:*:*:*:*:*:*:*:* versions up to (excluding) 1.83.0 Added Reference Type GitHub, Inc.: https://github.com/BerriAI/litellm/security/advisories/GHSA-53mr-6c8q-9789 Types: Mitigation, Vendor Advisory -
New CVE Received by [email protected]
Apr. 06, 2026
Action Type Old Value New Value Added 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. Added CVSS V4.0 AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:L/SI:L/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X Added CWE CWE-863 Added Reference https://github.com/BerriAI/litellm/security/advisories/GHSA-53mr-6c8q-9789