LangChain LangGraph BaseCache Deserialization of Untrusted Data Remote Code Execution Vulnerability

This vulnerability allows remote attackers to execute arbitrary code on affected installations of LangChain LangGraph. Authentication is not required to exploit this vulnerability. The specific flaw exists within the BaseCache class. The issue results from the lack of proper validation of...

Deserialization of Untrusted Data

Overview langgraph-checkpoint is a library with base interfaces for LangGraph checkpoint savers. Affected versions of this package are vulnerable to Deserialization of Untrusted Data via the BaseCache class when cache backends inheriting from BaseCache are enabled, and nodes are opted into cachin...

GHSA-MHR3-J7M5-C7C9 LangGraph: BaseCache Deserialization of Untrusted Data may lead to Remote Code Execution

Context A Remote Code Execution vulnerability exists in LangGraph's caching layer when applications enable cache backends that inherit from BaseCache and opt nodes into caching via CachePolicy. Prior to langgraph-checkpoint 4.0.0, BaseCache defaults to JsonPlusSerializerpicklefallback=True. When...

CVE-2026-27794 LangGraph: BaseCache Deserialization of Untrusted Data may lead to Remote Code Execution

LangGraph Checkpoint defines the base interface for LangGraph checkpointers. Prior to version 4.0.0, a Remote Code Execution vulnerability exists in LangGraph's caching layer when applications enable cache backends that inherit from BaseCache and opt nodes into caching via CachePolicy. Prior to...