Exploitation Summary
EIP tracks 4 public exploits for CVE-2025-68664. PoCs published by banyamer, Ak-cybe, Johnnyzhou666.
AI-analyzed exploit summary This repository contains functional exploit payloads for CVE-2025-68664, targeting a deserialization vulnerability in LangChain Core < 0.3.81. The payloads include RCE, SSRF, file system access, and reconnaissance techniques, leveraging the 'lc': 1 marker for exploitation.
Description
LangChain is a framework for building agents and LLM-powered applications. Prior to versions 0.3.81 and 1.2.5, a serialization injection vulnerability exists in LangChain's dumps() and dumpd() functions. The functions do not escape dictionaries with 'lc' keys when serializing free-form dictionaries. 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 versions 0.3.81 and 1.2.5.
Exploits (4)
This repository contains functional exploit payloads for CVE-2025-68664, targeting a deserialization vulnerability in LangChain Core < 0.3.81. The payloads include RCE, SSRF, file system access, and reconnaissance techniques, leveraging the 'lc': 1 marker for exploitation.
This repository provides a technical analysis of CVE-2025-68664 (LangGrinch), a serialization injection vulnerability in LangChain Core, covering root cause, exploitation flow, and mitigation strategies.
The repository contains a detailed technical analysis of CVE-2025-68664, a deserialization vulnerability in LangChain's core library. The writeup explains the root cause, impact, and exploitation mechanics, including how uncontrolled user input with the 'lc' key can lead to arbitrary object instantiation and potential RCE.
References (7)
Scores
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:L/A:N