Showing 2 vulnerabilities on this page for langchain

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VulnerabilityTitle and contextCVSSEPSSPoCsSignalsSTIX action

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 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-controlle

CWE-502Dec 23, 2025
CVSS8.6v3.1EPSS0.774%PoCs0SignalsNot listed in CISA KEVNo known ransomware useNo Nuclei templatesSTIX

Path Traversal in langchain-ai/langchainjs

A path traversal vulnerability exists in the `getFullPath` method of langchain-ai/langchainjs version 0.2.5. This vulnerability allows attackers to save files anywhere in the filesystem, overwrite existing text files, read `.txt` files, and delete files. The vulnerability is exploited through the `setFileContent`, `getParsedFile`, and `mdelete` methods, which do not properly sanitize user input.

CWE-22CWE-29Oct 29, 2024
CVSS-v4.0EPSS0.552%PoCs0SignalsNot listed in CISA KEVNo known ransomware useNo Nuclei templatesSTIX