CVE-2026-55235

langgraph-api (the LangGraph Server runtime) prior to 0.10.0 allows a run or cron to specify a relative webhook target that is delivered through an in-process loopback transport. The authentication middleware treats this transport as internal, so the webhook reaches the server's own thread and ru...

CVE-2026-55235 langgraph-api: Relative webhook targets in LangGraph Server can reach in-process routes without authentication

langgraph-api implements the LangGraph API for rapid development and testing. Prior to 0.10.0, langgraph-api permits a run or cron to specify a relative webhook target that is delivered through an in-process loopback transport, and the authentication middleware treats that transport as internal...

CVE-2026-55235 langgraph-api: Relative webhook targets in LangGraph Server can reach in-process routes without authentication

langgraph-api implements the LangGraph API for rapid development and testing. Prior to 0.10.0, langgraph-api permits a run or cron to specify a relative webhook target that is delivered through an in-process loopback transport, and the authentication middleware treats that transport as internal...

langgraph-api: Relative webhook targets in LangGraph Server can reach in-process routes without authentication

SummaryIn affected versions of langgraph-api the LangGraph Server runtime, a run or cron could be created with a relative webhook target. When the server later delivers such a webhook, it routes the request back into the same application through an in-process loopback transport that the...

GHSA-2C9Q-C2Q9-QGQV langgraph-api: Relative webhook targets in LangGraph Server can reach in-process routes without authentication

Summary In affected versions of langgraph-api the LangGraph Server runtime, a run or cron could be created with a relative webhook target. When the server later delivers such a webhook, it routes the request back into the same application through an in-process loopback transport that the...