# LangGraph SDK CVE-2026-104873: Auth Decorator Bypass

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## Article Metadata
- Title: LangGraph SDK CVE-2026-104873: Auth Decorator Bypass
- Summary: A langgraph-sdk bug applied actions=-scoped auth handlers to every action, so a signed-in user could reach others' threads. Fixed in 0.4.4; what to check.
- Published: Oct 3, 2026, 9:45 PM EDT
- Updated: Oct 3, 2026, 9:45 PM EDT
- Category: AI Security
- Primary topic: Cve 2026 104873
- Authors: Nadia Shah
- Read time: 6 min
- Language: en_US
- Publication time zone: America/New_York (U.S. Eastern Time)
- Access: Free to read

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