CVE-2026-104873

LangGraph Python SDK is used to connect to running LangGraph API servers, manage assistants, threads and stream runs from Python applications. From 0.1.45 until 0.4.4, the langgraph-sdk resource-scoped authorization decorators @auth.on.threads, @auth.on.assistants, and @auth.on.crons ignore the actions argument and register the selected handler for every action on the resource. Because that wildcard resource handler is selected before broader fallback handlers, an authenticated user may bypass fallback action, ownership, or permission checks and read, update, or delete another user's resource. Only Python deployments using actions on the affected decorators are vulnerable, and a deployment remains protected when the selected handler independently enforces all required checks for every action it receives. This issue is fixed in version 0.4.4.

CVSS

No CVSS.

References

Link	Resource
https://github.com/langchain-ai/langgraph/commit/5a77be5e8bec1600ad0a865638d88c1368497559
https://github.com/langchain-ai/langgraph/releases/tag/sdk==0.4.4
https://github.com/langchain-ai/langgraph/security/advisories/GHSA-fvww-7h3r-vfhp

Configurations

No configuration.

History

02 Oct 2026, 20:17

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-10-02 20:17

Updated : 2026-10-06 15:08

NVD link : CVE-2026-104873

Mitre link : CVE-2026-104873

CVE.ORG link : CVE-2026-104873

JSON object : View

Products Affected

No product.

CWE

CWE-863

Incorrect Authorization

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