langchain-ai langgraphjs up to 1.0.1 RedisSaver/ShallowRedisSaver injection

Summaryinfo

A vulnerability marked as problematic has been reported in langchain-ai langgraphjs up to 1.0.1. This affects the function RedisSaver/ShallowRedisSaver. This manipulation causes injection. The identification of this vulnerability is CVE-2026-27022. It is possible to initiate the attack remotely. There is no exploit available. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability classified as problematic was found in langchain-ai langgraphjs up to 1.0.1. Affected by this vulnerability is the function RedisSaver/ShallowRedisSaver. The manipulation with an unknown input leads to a injection vulnerability. The CWE definition for the vulnerability is CWE-74. The product constructs all or part of a command, data structure, or record using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify how it is parsed or interpreted when it is sent to a downstream component. As an impact it is known to affect confidentiality. The summary by CVE is:

@langchain/langgraph-checkpoint-redis is the Redis checkpoint and store implementation for LangGraph. A query injection vulnerability exists in the @langchain/langgraph-checkpoint-redis package's filter handling. The RedisSaver and ShallowRedisSaver classes construct RediSearch queries by directly interpolating user-provided filter keys and values without proper escaping. RediSearch has special syntax characters that can modify query behavior, and when user-controlled data contains these characters, the query logic can be manipulated to bypass intended access controls. This vulnerability is fixed in 1.0.2.

It is possible to read the advisory at github.com. This vulnerability is known as CVE-2026-27022 since 02/17/2026. The exploitation appears to be easy. The attack can be launched remotely. Technical details of the vulnerability are known, but there is no available exploit. The attack technique deployed by this issue is T1055 according to MITRE ATT&CK.

Upgrading to version 1.0.2 eliminates this vulnerability. The upgrade is hosted for download at github.com. Applying the patch 814c76dc3938d0f6f7e17ca3bc11d6a12270b2a1 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.

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Productinfo

Type

• Artificial Intelligence Software

Vendor

• langchain-ai

Name

• langgraphjs

Version

• 1.0.0
• 1.0.1

License

• open-source

Website

• Product: https://github.com/langchain-ai/langgraphjs/

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