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...

Authentication Bypass Using an Alternate Path or Channel

Overview litellm is a Library to easily interface with LLM API providers Affected versions of this package are vulnerable to Authentication Bypass Using an Alternate Path or Channel via exception handling in the MCP proxy authentication flow. An attacker can bypass authentication by supplying an...

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...

GHSA-MF52-J94G-746M LiteLLM: PROXY_ADMIN database API Key Generator Has Insufficient Session Expiration

A security flaw has been discovered in BerriAI litellm up to 1.82.2. This impacts the function authenticateuser of the file litellm/proxy/auth/loginutils.py of the component PROXYADMIN database API Key Generator. Performing a manipulation results in session expiration. The attack may be initiated...

CVE-2026-12772

A security flaw has been discovered in BerriAI litellm up to 1.82.2. This impacts the function authenticateuser of the file litellm/proxy/auth/loginutils.py of the component PROXYADMIN database API Key Generator. Performing a manipulation results in session expiration. The attack may be initiated...

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...

EUVD-2026-38139

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

Affected software: litellm MCP Proxy (BerriAI) up to version 1.59.8. The vulnerability lies in UserAPIKeyAuth in litellm/proxy/_experimental/mcp_server/auth/user_api_key_auth_mcp.py, where authentication can be bypassed if an invalid token triggers a swallowed 401/403 exception, allowing unauthen...

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...

EUVD-2026-38138

A security flaw has been discovered in BerriAI litellm up to 1.82.2. This impacts the function authenticateuser of the file litellm/proxy/auth/loginutils.py of the component PROXYADMIN database API Key Generator. Performing a manipulation results in session expiration. The attack may be initiated...

CVE-2026-12772 BerriAI litellm PROXY_ADMIN database API Key Generator login_utils.py authenticate_user session expiration

A security flaw has been discovered in BerriAI litellm up to 1.82.2. This impacts the function authenticateuser of the file litellm/proxy/auth/loginutils.py of the component PROXYADMIN database API Key Generator. Performing a manipulation results in session expiration. The attack may be initiated...

CVE-2026-12772 BerriAI litellm PROXY_ADMIN database API Key Generator login_utils.py authenticate_user session expiration

A security flaw has been discovered in BerriAI litellm up to 1.82.2. This impacts the function authenticateuser of the file litellm/proxy/auth/loginutils.py of the component PROXYADMIN database API Key Generator. Performing a manipulation results in session expiration. The attack may be initiated...

CVE-2026-12772 BerriAI litellm PROXY_ADMIN database API Key Generator login_utils.py authenticate_user session expiration

A security flaw has been discovered in BerriAI litellm up to 1.82.2. This impacts the function authenticateuser of the file litellm/proxy/auth/loginutils.py of the component PROXYADMIN database API Key Generator. Performing a manipulation results in session expiration. The attack may be initiated...

CVE-2026-12772

A security flaw has been discovered in BerriAI litellm up to 1.82.2. This impacts the function authenticateuser of the file litellm/proxy/auth/loginutils.py of the component PROXYADMIN database API Key Generator. Performing a manipulation results in session expiration. The attack may be initiated...

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-2026-89694

A security flaw has been discovered in BerriAI litellm up to 1.82.2. This impacts the function authenticate user of the file litellm/proxy/auth/login utils.py of the component PROXY ADMIN database API Key Generator. Performing a manipulation results in session expiration. The attack may be...

PT-2026-51197

Name of the Vulnerable Software and Affected Versions BerriAI litellm versions prior to 1.59.9 Description An improper authentication flaw exists in the MCP Proxy component. Specifically, the UserAPIKeyAuth function within the file litellm/proxy/ experimental/mcp server/auth/user api key auth...

PT-2026-51196

Name of the Vulnerable Software and Affected Versions BerriAI litellm versions prior to 1.82.3 Description A security flaw exists in the PROXY ADMIN database API Key Generator component within the authenticate user function of the litellm/proxy/auth/login utils.py file. A remote attacker can...