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Langchain-ai Langgraph-store-mongodb vulnerabilities

langchain-ai langgraph-checkpoint-mongodb, langgraph-store-mongodb, langchain-mongodb +2 moreLangChain MongoDB: NoSQL Operator Injection in MongoDBSaver.list() leading to cross-tenant data exposureCVE-2026-55253Fix available7.7 HighAugust 20, 2026