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I. Basic Information for CVE-2025-68665
Vulnerability Information

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Vulnerability Title
LangChain serialization injection vulnerability enables secret extraction
Source: NVD (National Vulnerability Database)
Vulnerability Description
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 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 serialized objects. When user-controlled data contains this key structure, it is treated as a legitimate LangChain object during deserialization rather than plain user data. This issue has been patched in @langchain/core versions 0.3.80 and 1.1.8, and langchain versions 0.3.37 and 1.2.3
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N
Source: NVD (National Vulnerability Database)
Vulnerability Type
可信数据的反序列化
Source: NVD (National Vulnerability Database)
Vulnerability Title
LangChain 代码问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
LangChain是LangChain开源的一个用于开发由大型语言模型 (LLM) 提供支持的应用程序的框架。 LangChain 0.3.37之前版本和1.2.3之前版本存在代码问题漏洞,该漏洞源于序列化注入,可能导致反序列化时执行任意代码。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
VendorProductAffected VersionsCPESubscribe
langchain-ailangchainjs @langchain/core >= 1.0.0, < 1.1.8 -
II. Public POCs for CVE-2025-68665
#POC DescriptionSource LinkShenlong Link
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Qwen3.5-35B-A3B-UD-Q4_K_XL.gguf · 9425 chars
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III. Intelligence Information for CVE-2025-68665
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IV. Related Vulnerabilities
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