Incorrect Authorization Affecting langgraph-sdk package, versions [0.1.45,0.4.4)
Threat Intelligence
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- published4 Oct 2026
- disclosed2 Oct 2026
- creditGrg0rry
Introduced: 2 Oct 2026
NewCVE-2026-104873 (opens in a new tab)How to fix?
Upgrade langgraph-sdk to version 0.4.4 or higher.
Overview
langgraph-sdk is a SDK for interacting with LangGraph API
Affected versions of this package are vulnerable to Incorrect Authorization via the _ResourceOn.__call__ method in langgraph_sdk/auth/__init__.py, where custom authorization handlers registered with resource-specific decorators fail to correctly enforce resource and action constraints. An authenticated attacker can exploit the flawed handler registration logic to bypass intended access controls, gaining unauthorized read and write access to protected resources.