langgraph-api: Relative webhook targets in LangGraph Server can reach in-process routes without authentication
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
| Vendor | Product | Default status | Versions | ||||||
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| langchain-ai | langgraph-api | affected |
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| Langchain-ai | Langgraph-api |
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| Source | ID | Title |
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Github GHSA |
GHSA-2c9q-c2q9-qgqv | langgraph-api: Relative webhook targets in LangGraph Server can reach in-process routes without authentication |
No CVSS v4.0
No CVSS v3.0
No CVSS v2
This CVE is not in the KEV list.
Exploit prediction score: < 1% (0.365% probability within 30 days)
| Type | Values Removed | Values Added |
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| First Time appeared |
Langchain-ai
Langchain-ai langgraph-api |
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| Vendors & Products |
Langchain-ai
Langchain-ai langgraph-api |
| Type | Values Removed | Values Added |
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| Metrics |
ssvc
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| Type | Values Removed | Values Added |
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| Description | 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 without applying the authentication context used for external requests. In deployments that rely on per-user authorization to separate threads and runs, an authenticated user can direct a webhook to the server's own thread and run routes, allowing creation of a run on or modification of another user's thread and limited incorporation of the targeted thread's metadata into the created run record. The affected path requires webhook targets and per-user authorization boundaries; deployments that deliberately re-enable loopback delivery should restrict it to controlled same-process routes because those webhooks remain unauthenticated. This issue is fixed in version 0.10.0. | |
| Title | langgraph-api: Relative webhook targets in LangGraph Server can reach in-process routes without authentication | |
| Weaknesses | CWE-287 | |
| References |
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| Metrics |
cvssV3_1
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