langchain-ai langgraph up to 2.x deserialization

CVSS Meta Temp Score
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CTI Interest Score
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6.0$0-$5k0.00

Summaryinfo

A vulnerability was found in langchain-ai langgraph up to 2.x. It has been declared as critical. The affected element is an unknown function. Such manipulation leads to deserialization. This vulnerability is listed as CVE-2025-64439. The attack may be performed from remote. There is no available exploit. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability was found in langchain-ai langgraph up to 2.x. It has been rated as critical. Affected by this issue is some unknown processing. The manipulation with an unknown input leads to a deserialization vulnerability. Using CWE to declare the problem leads to CWE-502. The product deserializes untrusted data without sufficiently verifying that the resulting data will be valid. Impacted is confidentiality, integrity, and availability. CVE summarizes:

LangGraph SQLite Checkpoint is an implementation of LangGraph CheckpointSaver that uses SQLite DB (both sync and async, via aiosqlite). In versions 2.1.2 and below, the JsonPlusSerializer (used as the default serialization protocol for all checkpointing) contains a Remote Code Execution (RCE) vulnerability when deserializing payloads saved in the "json" serialization mode. By default, the serializer attempts to use "msgpack" for serialization. However, prior to version 3.0 of the checkpointer library, if illegal Unicode surrogate values caused serialization to fail, it would fall back to using the "json" mode. This issue is fixed in version 3.0.0.

The advisory is shared for download at github.com. This vulnerability is handled as CVE-2025-64439 since 11/03/2025. The exploitation is known to be easy. The attack may be launched remotely. There are neither technical details nor an exploit publicly available.

Upgrading to version 3.0.0 eliminates this vulnerability. The upgrade is hosted for download at github.com. Applying the patch c5744f583b11745cd406f3059903e17bbcdcc8ac is able to eliminate this problem. The bugfix is ready for download at github.com. The best possible mitigation is suggested to be upgrading to the latest version.

VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

Type

Vendor

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA CVSS-B Score: 🔒
CNA CVSS-BT Score: 🔒
CNA Vector: 🔒

CVSSv3info

VulDB Meta Base Score: 6.3
VulDB Meta Temp Score: 6.0

VulDB Base Score: 6.3
VulDB Temp Score: 6.0
VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Deserialization
CWE: CWE-502 / CWE-20
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: langgraph 3.0.0
Patch: c5744f583b11745cd406f3059903e17bbcdcc8ac

Timelineinfo

11/03/2025 CVE reserved
11/08/2025 +5 days Advisory disclosed
11/08/2025 +0 days VulDB entry created
11/08/2025 +0 days VulDB entry last update

Sourcesinfo

Product: github.com

Advisory: GHSA-wwqv-p2pp-99h5
Status: Confirmed

CVE: CVE-2025-64439 (🔒)
GCVE (CVE): GCVE-0-2025-64439
GCVE (VulDB): GCVE-100-331568

Entryinfo

Created: 11/08/2025 07:28
Changes: 11/08/2025 07:28 (70)
Complete: 🔍
Cache ID: 216::103

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