CVE-2026-8752: h2o

Medium severity, CVSS 5.3. EPSS: 0.5% chance of exploitation in the next 30 days.

A weakness has been identified in h2oai h2o-3 up to 7402. This vulnerability affects the function exec of the file h2o-core/src/main/java/water/rapids/ast/prims/misc/AstSetProperty.java of the component Rapids setproperty Primitive Handler. Executing a manipulation can lead to improper access controls. The attack may be performed from remote. The exploit has been made available to the public and could be used for attacks. The vendor was contacted early about this disclosure but did not respond in any way.

Affected products

• h2o h2o: up to and including 7402

Published 2026-05-17. Last modified 2026-06-17.