The Hacker News - Critical LangChain Core Vulnerability Exposes Secrets via Serialization Injection

A critical security flaw has been disclosed in LangChain Core that could be exploited by an attacker to steal sensitive secrets and even influence large language model (LLM) responses through prompt injection. LangChain Core (i.e., langchain-core) is a core Python package that's part of the LangChain ecosystem, providing the core interfaces and model-agnostic abstractions for building

from The Hacker News https://thehackernews.com/2025/12/critical-langchain-core-vulnerability.html

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