LiteLLM: MCP Proxy Has Improper Authentication

A weakness has been identified in BerriAI litellm up to 1.59.8. Affected is the function UserAPIKeyAuth of the file litellm/proxy/experimental/mcpserver/auth/userapikeyauthmcp.py of the component MCP Proxy. Executing a manipulation can lead to improper authentication. The attack may be launched...

PYSEC-2026-4067 LiteLLM: MCP Proxy Has Improper Authentication

A weakness has been identified in BerriAI litellm up to 1.59.8. Affected is the function UserAPIKeyAuth of the file litellm/proxy/experimental/mcpserver/auth/userapikeyauthmcp.py of the component MCP Proxy. Executing a manipulation can lead to improper authentication. The attack may be launched...

PT-2026-105823

A weakness has been identified in BerriAI litellm up to 1.59.8. Affected is the function UserAPIKeyAuth of the file litellm/proxy/ experimental/mcp server/auth/user api key auth mcp.py of the component MCP Proxy. Executing a manipulation can lead to improper authentication. The attack may be...

LiteLLM CVE-2026-59822 MCP Auth Bypass Detect

Detects CVE-2026-59822 in LiteLLM proxy before 1.84.0: failed LiteLLM key validation on the MCP Streamable HTTP endpoint falls back to an empty UserAPIKeyAuth object when a fabricated Authorization Bearer is supplied. !/usr/bin/env python3 -- coding: utf-8 -- """Detect LiteLLM CVE-2026-59822 MCP...

CVE-2026-59822: Improper Authentication

LiteLLM is a proxy server AI Gateway to call LLM APIs in OpenAI or native format. Prior to 1.84.0, LiteLLM's MCP Streamable HTTP endpoint allowed an unauthenticated attacker to use a fabricated Authorization header to trigger an OAuth2 passthrough fallback path that replaced failed LiteLLM key...

GHSA-4JCJ-7X88-M979 LiteLLM: MCP Proxy Has Improper Authentication

A weakness has been identified in BerriAI litellm up to 1.59.8. Affected is the function UserAPIKeyAuth of the file litellm/proxy/experimental/mcpserver/auth/userapikeyauthmcp.py of the component MCP Proxy. Executing a manipulation can lead to improper authentication. The attack may be launched...

LiteLLM: MCP Proxy Has Improper Authentication

A weakness has been identified in BerriAI litellm up to 1.59.8. Affected is the function UserAPIKeyAuth of the file litellm/proxy/experimental/mcpserver/auth/userapikeyauthmcp.py of the component MCP Proxy. Executing a manipulation can lead to improper authentication. The attack may be launched...

CVE-2026-12773 BerriAI litellm MCP Proxy user_api_key_auth_mcp.py UserAPIKeyAuth improper authentication

A weakness has been identified in BerriAI litellm up to 1.59.8. Affected is the function UserAPIKeyAuth of the file litellm/proxy/experimental/mcpserver/auth/userapikeyauthmcp.py of the component MCP Proxy. Executing a manipulation can lead to improper authentication. The attack may be launched...

CVE-2026-12773

A weakness has been identified in BerriAI litellm up to 1.59.8. Affected is the function UserAPIKeyAuth of the file litellm/proxy/experimental/mcpserver/auth/userapikeyauthmcp.py of the component MCP Proxy. Executing a manipulation can lead to improper authentication. The attack may be launched...

CVE-2026-12773: Improper Authentication

A weakness has been identified in BerriAI litellm up to 1.59.8. Affected is the function UserAPIKeyAuth of the file litellm/proxy/experimental/mcpserver/auth/userapikeyauthmcp.py of the component MCP Proxy. Executing a manipulation can lead to improper authentication. The attack may be launched...

PT-2026-89684

A weakness has been identified in BerriAI litellm up to 1.59.8. Affected is the function UserAPIKeyAuth of the file litellm/proxy/ experimental/mcp server/auth/user api key auth mcp.py of the component MCP Proxy. Executing a manipulation can lead to improper authentication. The attack may be...