A vulnerability in the typeahead endpoint of h2oai/h2o-3 version 3.46.0 allows for a denial of service. The endpoint performs a `HEAD` request to verify the existence of a specified resource without setting a timeout. An attacker can exploit this by sending multiple requests to an attacker-controlled server that hangs, causing the application to block and become unresponsive to other requests.
| Package (Ecosystem) | Introduced | Fixed | Limit |
|---|---|---|---|
| h2o(PyPI) | 3.2.0.1 | N/A | N/A |
| ai.h2o:h2o-core(Maven) | 3.2.0.1 | N/A | N/A |
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