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I. Basic Information for CVE-2026-28277
Vulnerability Information

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Vulnerability Title
LangGraph: Unsafe msgpack deserialization in LangGraph checkpoint loading
Source: NVD (National Vulnerability Database)
Vulnerability Description
LangGraph SQLite Checkpoint is an implementation of LangGraph CheckpointSaver that uses SQLite DB (both sync and async, via aiosqlite). In version 1.0.9 and prior, LangGraph checkpointers can load msgpack-encoded checkpoints that reconstruct Python objects during deserialization. If an attacker can modify checkpoint data in the backing store (for example, after a database compromise or other privileged write access to the persistence layer), they can potentially supply a crafted payload that triggers unsafe object reconstruction when the checkpoint is loaded. No known patch is public.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:A/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
Source: NVD (National Vulnerability Database)
Vulnerability Type
可信数据的反序列化
Source: NVD (National Vulnerability Database)
Vulnerability Title
langgraph 代码问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
langgraph是LangChain开源的一个大模型框架。 langgraph 1.0.9及之前版本存在代码问题漏洞,该漏洞源于反序列化过程中可能重建Python对象,可能导致不安全的对象重建。
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-ailanggraph <= 1.0.9 -
II. Public POCs for CVE-2026-28277
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III. Intelligence Information for CVE-2026-28277
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