Deserialization of Untrusted Data

Overview @langchain/core is a Core LangChain.js abstractions and schemas Affected versions of this package are vulnerable to Deserialization of Untrusted Data via the toJSON function, which fails to properly escape user-controlled objects containing the lc key during serialization. An attacker ca...

CVE-2025-68665 LangChain serialization injection vulnerability enables secret extraction

LangChain is a framework for building LLM-powered applications. Prior to @langchain/core versions 0.3.80 and 1.1.8, and prior to langchain versions 0.3.37 and 1.2.3, a serialization injection vulnerability exists in LangChain JS's toJSON method and subsequently when string-ifying objects using...

CVE-2025-68665 LangChain serialization injection vulnerability enables secret extraction

LangChain is a framework for building LLM-powered applications. Prior to @langchain/core versions 0.3.80 and 1.1.8, and prior to langchain versions 0.3.37 and 1.2.3, a serialization injection vulnerability exists in LangChain JS's toJSON method and subsequently when string-ifying objects using...

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...

PT-2025-52862

Name of the Vulnerable Software and Affected Versions LangChain versions prior to 0.3.37 @langchain/core versions prior to 0.3.80 LangChain versions prior to 1.2.3 @langchain/core versions prior to 1.1.8 Description LangChain is a framework designed for building applications powered by Large...

CVE-2025-5493

A vulnerability was found in Baison Channel Middleware Product 2.0.1 and classified as critical. Affected by this issue is some unknown functionality of the file /e3api/api/main/ToJsonByControlName. The manipulation of the argument data leads to sql injection. The attack may be launched remotely...

Internet Explorer - Use-After-Free in JScript Arguments During toJSON Callback

There is a use-after-free issue in JSCript triggerable via Internet Explorer where the members of the 'arguments' object aren't tracked by the garbage collector during the 'toJSON' callback. Thus, during the 'toJSON' callback, it is possible to assign a variable to the 'arguments' object, have it...

UBUNTU-CVE-2014-1583

The Alarm API in Mozilla Firefox before 33.0 and Firefox ESR 31.x before 31.2 does not properly restrict toJSON calls, which allows remote attackers to bypass the Same Origin Policy via crafted API calls that access sensitive information within the JSON data of an alarm...