CVE-2026-118668
Published:October 28, 2026
Updated:November 01, 2026
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.
Affected Packages
langgraph-api (PYTHON):
Affected version(s) >=0.4.0 <0.15.0 || >=0.12.0rc1 <0.15.0 || >=0.10.0rc1 <0.15.0 || >=0.13.0rc1 <0.15.0 || >=0.9.0 <0.15.0 || >=0.3.0 <0.15.0 || =0.9.0rc1 <0.15.0 || >=0.5.0 <0.15.0 || >=0.11.0rc1 <0.15.0 || >=0.6.0 <0.15.0 || >=0.11.0 <0.15.0 || >=0.14.0 <0.15.0 || >=0.15.0rc1 <0.15.0 || >=0.12.0 <0.15.0 || >=0.15.0.dev1 <0.15.0 || >=0.2.0 <0.15.0 || >=0.8.0 <0.15.0 || >=0.7.0 <0.15.0 || >=0.10.0 <0.15.0 || >=0.13.0 <0.15.0 || >=0.14.0rc1 <0.15.0 || >=0.1.2 <0.15.0Fix Suggestion:
Update to version 0.15.0Related Resources (3)
Do you need more information?
Contact UsCVSS v4
Base Score:
8.6
Attack Vector
NETWORK
Attack Complexity
LOW
Attack Requirements
NONE
Privileges Required
LOW
User Interaction
NONE
Vulnerable System Confidentiality
HIGH
Vulnerable System Integrity
HIGH
Vulnerable System Availability
NONE
Subsequent System Confidentiality
NONE
Subsequent System Integrity
NONE
Subsequent System Availability
NONE
CVSS v3
Base Score:
8.1
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
NONE
Weakness Type (CWE)
EPSS
Base Score:
0.37