CVE-2026-8752

What it is

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.

At a glance

Exploitability

Can be exploited over the network without logging in. Limited direct impact.

Exploit odds

0.3% chance of exploitation in the next 30 days (EPSS).

Fix

No patch or advisory is linked yet. Look at mitigations or restrict exposure.

Timeline

1. 2026-05-17 12:16 UTC PublishedDisclosed publicly on CVE.org and NVD
2. 2026-10-14 20:10 UTC Last updatedMost recent change to the record

Details

Published

2026-05-17 12:16 UTC

Last modified

2026-10-14 20:10 UTC

Exploit probability

0.3% · EPSS, next 30 days

Weakness

CWE-266

Record status

Analyzed

Affected

• h2o ≤ 7402

Attack profile CVSS 4.0 · 5.5

Attack vector

Network

Complexity

Low

Attack requirements

None

Privileges needed

None

User interaction

None

Confidentiality

None

Integrity

Low

Availability

None