LangChain serialization injection vulnerability enables secret extraction

Context A serialization injection vulnerability exists in LangChain JS's toJSON method and subsequently when string-ifying objects using JSON.stringify. The method did not escape objects with 'lc' keys when serializing free-form data in kwargs. The 'lc' key is used internally by LangChain to mark...

GHSA-R399-636X-V7F6 LangChain serialization injection vulnerability enables secret extraction

Context A serialization injection vulnerability exists in LangChain JS's toJSON method and subsequently when string-ifying objects using JSON.stringify. The method did not escape objects with 'lc' keys when serializing free-form data in kwargs. The 'lc' key is used internally by LangChain to mark...