CVE-2026-48775

LangGraph SQLite Checkpoint is an implementation of LangGraph CheckpointSaver that uses SQLite DB (both sync and async, via aiosqlite). In versions 4.1.0 and prior, the JsonPlusSerializer can reconstruct Python objects from JSON checkpoint payloads. Under conditions where someone could modify checkpoint bytes at rest in the backing store, the deserialization path could reconstruct objects beyond what the application expects, which could in turn result in code execution at checkpoint load time. This is a defense-in-depth issue. The affected behavior is reachable only when checkpoint bytes at rest in the backing store can be modified by an unauthorized party. In most deployments that prerequisite already implies a serious incident; the additional concern is turning "checkpoint-store write access" into code execution in the application runtime. This issue has been fixed in version 4.1.1.

CVSS v3 6.8 MEDIUM

6.8^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 0.9 / Impact : 5.9

Attack Vector ADJACENT_NETWORK

Attack Complexity LOW

Privileges Required HIGH

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://github.com/langchain-ai/langgraph/security/advisories/GHSA-fjqc-hq36-qh5p	Vendor Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:langchain:langgraph-checkpoint:*:*:*:*:*:python:*:*

History

No history.

Information

Published : 2026-06-16 19:16

Updated : 2026-06-24 18:53

NVD link : CVE-2026-48775

Mitre link : CVE-2026-48775

CVE.ORG link : CVE-2026-48775

JSON object : View

Products Affected

langchain

langgraph-checkpoint

CWE

CWE-502

Deserialization of Untrusted Data

CWE-913

Improper Control of Dynamically-Managed Code Resources

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