Description
In h2oai/h2o-3 version 3.46.0.2, a vulnerability exists where uploading and repeatedly parsing a large GZIP file can cause a denial of service. The server becomes unresponsive due to memory exhaustion and a large number of concurrent slow-running jobs. This issue arises from the improper handling of highly compressed data, leading to significant data amplification.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| h2oai | h2oai/h2o-3 | unspecified – ≤ latest | — |
Affected packages
| Ecosystem | Package | Affected | Fixed | Record |
|---|---|---|---|---|
| Maven | ai.h2o:h2o-core | >= 3.32.1.2, <= 3.46.0.2 | — | GHSA-6w62-3jvj-mfj6 |
| PyPI | h2o | >= 3.32.1.2, <= 3.46.0.2 | — | PYSEC-2026-1439 |