CVE-2026-107858 Cross-Site WebSocket Hijacking and Permissive CORS in Google Agent Development Kit (ADK) for Java Development Server

Missing Origin Validation in WebSockets CWE-1385 and Permissive Cross-domain Policy with Untrusted Domains CWE-942 in the development web server ADK Web in Google Agent Development Kit ADK for Java com.google.adk:google-adk-dev versions 0.1.0 before 1.13.0 and com.google.adk:google-adk-maven-plug...

CVE-2026-107858

The Google Agent Development Kit (ADK) for Java development web server (ADK Web) is vulnerable to Cross-Site WebSocket Hijacking (CWE-1385) and Permissive CORS (CWE-942). The issue stems from missing origin validation in the /run_live WebSocket endpoint and a default Access-Control-Allow-Origin: ...