Vulnerability Description
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.
Related Weaknesses (CWE)
References
FAQ
What is CVE-2026-118668?
CVE-2026-118668 is a documented vulnerability. 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 rewritte...
How severe is CVE-2026-118668?
CVSS scoring is not yet available for CVE-2026-118668. Check NVD for updates.
Is there a patch for CVE-2026-118668?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.