CVE-2026-104873

A flaw was found in langgraph-sdk. This vulnerability allows an authenticated attacker to bypass authorization controls to access, modify, or delete resources belonging to other users. The issue occurs because resource-scoped authorization decorators fail to restrict handlers to specified actions...

CVE-2026-104873 LangGraph SDK custom auth silently ignores actions= on resource decorators

LangGraph Python SDK is used to connect to running LangGraph API servers, manage assistants, threads and stream runs from Python applications. From 0.1.45 until 0.4.4, the langgraph-sdk resource-scoped authorization decorators @auth.on.threads, @auth.on.assistants, and @auth.on.crons ignore the...

CVE-2026-104873

The LangGraph Python SDK is vulnerable to an authorization bypass in versions 0.1.45 through 0.4.3 . The root cause is that resource-scoped authorization decorators (@auth.on.threads , @auth.on.assistants , and @auth.on.crons ) ignore the actions argument, registering handlers for every action on...

CVE-2026-104873: Incorrect Authorization

LangGraph Python SDK is used to connect to running LangGraph API servers, manage assistants, threads and stream runs from Python applications. From 0.1.45 until 0.4.4, the langgraph-sdk resource-scoped authorization decorators @auth.on.threads, @auth.on.assistants, and @auth.on.crons ignore the...