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/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 launched remotely. The exploit has been made available to the public and could be used for attacks. The vendor was contacted early about this disclosure.

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 launched remotely. The exploit has been made available to the public and could be used for attacks. The vendor was contacted early about this disclosure.

Se ha identificado una debilidad en BerriAI litellm hasta la versión 1.59.8. Afecta a la función UserAPIKeyAuth del archivo litellm/proxy/_experimental/mcp_server/auth/user_api_key_auth_mcp.py del componente MCP Proxy. La ejecución de una manipulación puede conducir a una autenticación impropia. El ataque puede lanzarse de forma remota. El exploit ha sido puesto a disposición del público y podría ser utilizado para ataques. El proveedor fue contactado con antelación sobre esta divulgación.