CVE-2026-118668

langgraph-api implements the LangGraph API for rapid development and testing. From 0.1.2 until 0.15.0, JavaScript or TypeScript custom authentication Store authorization handlers can return a rewritten namespace that is not carried across the runtime boundary and applied before the Store operation. An authenticated user can therefore access another user's Store namespace when a deployment relies on namespace rewriting for isolation, allowing unauthorized reads, overwrites, searches, or deletions. Python custom authentication and handlers that reject unauthorized namespaces instead of rewriting them are not affected. This issue is fixed in version 0.15.0.

CVSS

No CVSS.

References

Link	Resource
https://github.com/langchain-ai/langgraph/security/advisories/GHSA-4hm6-w6qq-w73v

Configurations

No configuration.

History

28 Oct 2026, 21:16

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-10-28 21:16

Updated : 2026-10-29 18:17

NVD link : CVE-2026-118668

Mitre link : CVE-2026-118668

CVE.ORG link : CVE-2026-118668

JSON object : View

Products Affected

No product.

CWE

CWE-639

Authorization Bypass Through User-Controlled Key

CWE-863

Incorrect Authorization

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