Information disclosure in H2o
CVE-2026-8750
A vulnerability was identified in h2oai h2o-3 up to 7402. Affected by this issue is the function importFiles of the file h2o-core/src/main/java/water/persist/PersistNFS.java of the component ImportFile API. Such manipulation leads to information disclosure. The attack can be executed remotely. The exploit is publicly available and might be used. The vendor was contacted early about this disclosure but did not respond in any way.
Vulnerability class: Information Disclosure
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N.
EPSS exploit prediction
EPSS: 0.007 (50.3th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 50th percentile — 50.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.005 · newest: 0.007 · change: +0.002
Affected products
- H2o
- H2oai H2o-3 — versions 7402
Weakness classification (CWE)
References
- vuldb.com/submit/810105 (VDB Entry, Third Party Advisory, third-party-advisory)
- vuldb.com/vuln/364377 (technical-description, VDB Entry, Third Party Advisory, vdb-entry)
- vuldb.com/vuln/364377/cti (signature, Permissions Required, permissions-required, VDB Entry)
- vulnplus-note.wetolink.com/share/wWjmsfKHRJi3 (exploit, Broken Link)
Frequently asked questions
- What is CVE-2026-8750?
- CVE-2026-8750 is a medium-severity vulnerability in H2o, classified under Information Disclosure. CVSS score: 5.3/10. Published 2026-05-17.
- How severe is CVE-2026-8750?
- Medium severity. CVSS v3 base score is 5.3 out of 10.