LangGrinch Vulnerability (CVE-2025-68664): The Critical LangChain Secret Leak Explained

Comprehensive Analysis of the LangGrinch Vulnerability (CVE-2025-68664): A Critical Security Advisory for LangChain Core In the rapidly evolving landscape of artificial intelligence, security frameworks are constantly tested by new and unexpected vulnerabilities. Recently, a significant security disclosure was made regarding LangChain, one of the most widely deployed AI framework components globally. This vulnerability, tracked as CVE-2025-68664 and assigned the identifier GHSA-c67j-w6g6-q2cm, has been dubbed “LangGrinch.” It represents a critical flaw in the core serialization logic of the LangChain framework, one that allows for the leakage of secrets and the unsafe instantiation of objects. This analysis provides a detailed, technical breakdown …