CVE-2024-7765: h2o

High severity, CVSS 7.5. EPSS: 0.8% chance of exploitation in the next 30 days.

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

• h2o h2o: version 3.46.0.2 only

Published 2025-03-20. Last modified 2026-06-17.