Vulnerability · Published May 17, 2026 · Assigned by VulDB

CVE-2026-8752h2oai h2o-3 Rapids setproperty Primitive AstSetProperty.java exec access control

Medium 5.3

In plain English

A medium-severity improper access control in h2o-3 from h2oai. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 24% of all known vulnerabilities).

Severity (CVSS 3.1)5.3Medium

Exploit odds (30 days)0.3%top 76.0% of all CVEs

Exploited in the wildNo reportsCISA SSVC: poc

Attack toolingNoneno public tooling known

Official description

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 (as reported)

Vendor	Product	Versions
h2oai	h2o-3	7402

Weakness: CWE-284, CWE-266 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N/E:P/RL:X/RC:R

References

VDB-364379 | h2oai h2o-3 Rapids setproperty Primitive AstSetProperty.java exec access control vdb-entry, technical-description
VDB-364379 | CTI Indicators (IOB, IOC, TTP, IOA) signature, permissions-required
Submit #810108 | H2O-3 latest pre-auth logic flaw third-party-advisory
https://vulnplus-note.wetolink.com/share/pyVa0GWPuAZE exploit