Information Disclosure Vulnerability in H2O.ai H2O-3 Framework
CVE-2026-8750

6.9MEDIUM

Key Information:

Vendor

H2oai

Status
H2o-3
Vendor
CVE Published:
17 May 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-8750?

A vulnerability exists in the H2O.ai H2O-3 framework affecting the ImportFile API's importFiles function within PersistNFS.java. This flaw allows for unauthorized information disclosure, potentially exposing sensitive data. The vulnerability can be exploited remotely, putting affected systems at risk. Despite early notification, the vendor has not responded regarding this issue, leaving systems vulnerable to known exploits.

Affected Version(s)

h2o-3 7402

Exploit Proof of Concept (PoC)

PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.

CVE-2026-8750 - Proof of Concept

References

https://vuldb.com/vuln/364377
vdb-entrytechnical-description
https://vuldb.com/vuln/364377/cti
signaturepermissions-required
https://vuldb.com/submit/810105
third-party-advisory

CVSS V4

Score:
6.9
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

Credit

vulnplusbot (VulDB User)
VulDB CNA Team
.