CVE-2026-8750

Description

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.

Overview

State: PUBLISHED
Assigner (CNA): VulDB
CVSS severity: MEDIUM
CVSS score: 6.9 / 10
CVSS vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:P
Effective score: 6.9 / 10 MEDIUM source: CNA overview
CWE(s): CWE-200, CWE-284
Reserved: 2026-05-16
Published: 2026-05-17 12:45 UTC
Last updated: 2026-05-17 12:45 UTC
Source: https://raw.githubusercontent.com/CVEProject/cvelistV5/main/cves/2026/8xxx/CVE-2026-8750.json
Linked Threat: CVE-2026-8750 — CVE-2026-8750

NVD triage scoring NVD CVE 2.0

Layer NVD adds on top of the CNA's CVE record — published / last-modified timestamps, exploitability / impact subscores, and the FIRST.org EPSS probability that this CVE will be exploited in the wild in the next 30 days.

NVD published: 2026-05-17 11:16:35 UTC
NVD last modified: 2026-05-19 18:22:34 UTC
NVD CVSS v3.1: 5.3 / 10 MEDIUM source: cna@vuldb.com
NVD CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
Exploitability subscore: 3.9 / 10
Impact subscore: 1.4 / 10
EPSS score: 0.0001 (probability of exploitation in next 30 days)
EPSS percentile: 2.10% vs all CVEs — higher = more likely to be exploited, as of 2026-05-24

European Union Vulnerability Database ENISA EUVD

ENISA's official EU repository for curated vulnerability intelligence. Carries a separate identifier (EUVD-YYYY-NNNN) and frequently exposes an earlier-published description + CVSS than NVD does.

EUVD ID: EUVD-2026-30694
Assigner: VulDB
Published: May 17, 2026, 10:45:10 AM
Updated: May 18, 2026, 5:53:03 PM
EUVD base score (CVSS 4.0): 6.9 / 10
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:P
EUVD-reported EPSS: 0.0100
Vendors: h2oai
Products: h2o-3 (7402)
Aliases: GHSA-2g37-rjvj-534q

ENISA description: 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.

EUVD references (4)

Affected products (1)

Vendor	Product	Versions	Platforms
h2oai	h2o-3	`7402` (affected)	—

Affected products — CPE 2.3 (1) NVD

NVD's normalized CPE 2.3 matchers, used by vendor tools (vulnerability scanners, asset managers) for automated detection. Compare with the CNA's free-text "Affected products" section above.

cpe:2.3:a:h2o:h2o:*:*:*:*:*:*:*:*

Vendor references (4)

References embedded in the original CVE record by the assigning CNA.

VDB-364377 | h2oai h2o-3 ImportFile API PersistNFS.java importFiles information disclosure vdb-entrytechnical-description
VDB-364377 | CTI Indicators (IOB, IOC, TTP, IOA) signaturepermissions-required
Submit #810105 | H2O-3 latest arbitrary local file disclosure third-party-advisory
https://vulnplus-note.wetolink.com/share/wWjmsfKHRJi3 exploit

MITRE references (4) cveawg.mitre.org

Pulled from MITRE's CVE Services API by the 🛰 Backfill from MITRE button.

https://vulnplus-note.wetolink.com/share/wWjmsfKHRJi3 exploit
VDB-364377 | CTI Indicators (IOB, IOC, TTP, IOA) signature, permissions-required
Submit #810105 | H2O-3 latest arbitrary local file disclosure third-party-advisory
VDB-364377 | h2oai h2o-3 ImportFile API PersistNFS.java importFiles information disclosure vdb-entry, technical-description

Web references (3)

DuckDuckGo results ranked by threat-intel / vendor advisory domains. Generated by the 🔎 Find references (web) button above — same flow as the Remediations search.

https://nvd.nist.gov/vuln/detail/CVE-2026-8750 tenable:nvd.nist.gov
https://www.cve.org/CVERecord?id=CVE-2026-8750 tenable:www.cve.org
https://www.first.org/epss/ tenable:www.first.org

NVD-tagged references (4)

Reference list NVD curates from the CNA record, vendor advisories, and third-party reports. The tag chips below are NVD's analyst-assigned categories.

https://vuldb.com/submit/810105 cna@vuldb.com Third Party AdvisoryVDB Entry
https://vuldb.com/vuln/364377 cna@vuldb.com Third Party AdvisoryVDB Entry
https://vuldb.com/vuln/364377/cti cna@vuldb.com Permissions RequiredVDB Entry
https://vulnplus-note.wetolink.com/share/wWjmsfKHRJi3 cna@vuldb.com Broken Link

Remediations (17)

Remediations are stored against the linked Threat row; the list below is deduplicated across both pages.

Security updates for Adobe Acrobat and Reader

web:helpx.adobe.com

Security updates for Adobe Acrobat and Reader Last updated on Apr 14, 2026 | Also applies to Adobe Acrobat

2026-05-23 20:49 UTC
Nvd - Cve-2026-8950

web:nvd.nist.gov

An official website of the United States government Here's how you know

2026-05-23 20:49 UTC
Security Update Guide - Microsoft

web:portal.msrc.microsoft.com

The Security Update Guide provides information on the latest Microsoft security updates, helping users understand and address potential vulnerabilities effectively.

2026-05-23 20:49 UTC
ArcGIS Server Security 2025 Update 1 Patch - Esri Support

web:support.esri.com

Refer to the Issues Addressed with this Patch section for details about BUG-000171492. The new patch when shown as available in the ArcGIS Enterprise Patch Notification tool, is listed as ArcGIS Server Security 2025 Update 1 Patch with a release date of April 17, 2025; once installed, it is listed as ArcGIS Server Security 2025 Update 1 Patch B.

2026-05-23 20:49 UTC
SAP Security Patch Day - February 2026

web:support.sap.com

SAP security Patch Day Bulletin

2026-05-23 20:49 UTC
Landing Page | ServiceNow Common Vulnerabilities & Exposures (CVE ...

web:support.servicenow.com

Overview The advisories below document publicly disclosed Common Vulnerabilities and Exposures ( CVEs ) in the Now Platform by ServiceNow. Because ServiceNow uses various methods to communicate vulnerability information, patches, and other fixes, customers should review family, security patch , and hotfix release notes, which are available at https://docs.servicenow.com, for a complete list of ...

2026-05-23 20:49 UTC
Critical Patch Updates, Critical Security Patch Updates ... - Oracle

web:www.oracle.com

Critical Security Patch Updates Critical Security Patch Updates provide security patches for supported Oracle on-premises products. A Critical Security Patch Update provides targeted, high-priority security fixes in a smaller, more focused format, making them easier to apply with minimal disruption.

2026-05-23 20:49 UTC
Oracle Patches 450 Vulnerabilities With April 2026 CPU

web:www.securityweek.com

Oracle on Tuesday announced the release of 481 new security patches as part of its April 2026 Critical Patch Update (CPU). Across the 28 product families that received security updates, more than 300 patches address vulnerabilities that are remotely exploitable without authentication.

2026-05-23 20:49 UTC
Oracle October Critical Patch Update (CPU) 170 CVEs

web:www.tenable.com

On October 21, Oracle released its Critical Patch Update (CPU) for October 2025, the fourth and final quarterly update of the year. This CPU contains fixes for 170 unique CVEs in 374 security updates across 29 Oracle product families.

2026-05-23 20:49 UTC
Patch Tuesday May 2026: Security Updates & CVE Analysis

web:zecurit.com

Get the complete breakdown of Microsoft's May 2026 Patch Tuesday. We analyze the latest security updates and all critical CVEs .

2026-05-23 20:49 UTC
Security Advisory Bulletin 064 | Ubiquiti Community

web:community.ui.com

Published: May 21, 2026 Updated: May 22, 2026 Version: 1.1 Revision: 1.1 Summary 1 of 5 A malicious actor with access to the network and high privileges could exploit an Improper Input Validation vulnerability found in UniFi OS devices to execute a Command Injection. Affected Products: UniFi OS Server (Version 5.0.6 and earlier) Mitigation : Update your UniFi OS Server to Version 5.0.8 or later ...

2026-05-26 02:56 UTC
Microsoft Patch Tuesday August 2025 - Critical Fixes | Absolute ...

web:www.absolute.com

Microsoft Patch Tuesday August 2025 delivers 109 fixes, including critical vulnerabilities in MSMQ, NTLM, and graphics components. Stay protected.

2026-05-26 02:56 UTC
Microsoft is working on a patch for 'YellowKey ... - Computerworld

web:www.computerworld.com

Microsoft says it is considering a patch for a zero-day vulnerability, dubbed YellowKey, that allows attackers with access to a Windows device to bypass Bitlocker encryption protection and read ...

2026-05-26 02:56 UTC
Microsoft Confirms Active 0-Day Exploit—Check Emergency Mitigation

web:www.forbes.com

Updated May 17: This article, originally published May 16, has been updated to include further details on the emergency mitigation process recommended after the CVE - 2026 -42897 Microsoft Exchange ...

2026-05-26 02:56 UTC
Microsoft Patch Tuesday - August 2025 - Lansweeper

web:www.lansweeper.com

Which vulnerabilities, issues, and other things did Microsoft update? Discover what's new using Lansweeper's Patch Tuesday August 2025 summary.

2026-05-26 02:56 UTC
Oracle Critical Patch Update Advisory - April 2026

web:www.oracle.com

This Critical Patch Update contains 481 new security patches across the product families listed below. Please note that an MOS note summarizing the content of this Critical Patch Update and other Oracle Software Security Assurance activities is located at April 2026 Critical Patch Update: Executive Summary and Analysis.

2026-05-26 02:56 UTC
Microsoft's latest major patch fixes a serious zero-day ... - TechRadar

web:www.techradar.com

Pro Security Microsoft's latest major patch fixes a serious zero-day flaw, and a host of other issues - so update now News By Sead Fadilpašić published August 13, 2025

2026-05-26 02:56 UTC

AI Forensic Analysis

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Raw JSON

The full cvelistV5 record. Download as CVE-2026-8750.json.

{
  "containers": {
    "cna": {
      "affected": [
        {
          "cpes": [
            "cpe:2.3:a:h2oai:h2o-3:*:*:*:*:*:*:*:*"
          ],
          "modules": [
            "ImportFile API"
          ],
          "product": "h2o-3",
          "vendor": "h2oai",
          "versions": [
            {
              "status": "affected",
              "version": "7402"
            }
          ]
        }
      ],
      "credits": [
        {
          "lang": "en",
          "type": "reporter",
          "value": "vulnplusbot (VulDB User)"
        },
        {
          "lang": "en",
          "type": "coordinator",
          "value": "VulDB CNA Team"
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "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."
        }
      ],
      "metrics": [
        {
          "cvssV4_0": {
            "baseScore": 6.9,
            "baseSeverity": "MEDIUM",
            "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:P",
            "version": "4.0"
          }
        },
        {
          "cvssV3_1": {
            "baseScore": 5.3,
            "baseSeverity": "MEDIUM",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N/E:P/RL:X/RC:R",
            "version": "3.1"
          }
        },
        {
          "cvssV3_0": {
            "baseScore": 5.3,
            "baseSeverity": "MEDIUM",
            "vectorString": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N/E:P/RL:X/RC:R",
            "version": "3.0"
          }
        },
        {
          "cvssV2_0": {
            "baseScore": 5,
            "vectorString": "AV:N/AC:L/Au:N/C:P/I:N/A:N/E:POC/RL:ND/RC:UR",
            "version": "2.0"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-200",
              "description": "Information Disclosure",
              "lang": "en",
              "type": "CWE"
            }
          ]
        },
        {
          "descriptions": [
            {
              "cweId": "CWE-284",
              "description": "Improper Access Controls",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-05-17T10:45:10.231Z",
        "orgId": "1af790b2-7ee1-4545-860a-a788eba489b5",
        "shortName": "VulDB"
      },
      "references": [
        {
          "name": "VDB-364377 | h2oai h2o-3 ImportFile API PersistNFS.java importFiles information disclosure",
          "tags": [
            "vdb-entry",
            "technical-description"
          ],
          "url": "https://vuldb.com/vuln/364377"
        },
        {
          "name": "VDB-364377 | CTI Indicators (IOB, IOC, TTP, IOA)",
          "tags": [
            "signature",
            "permissions-required"
          ],
          "url": "https://vuldb.com/vuln/364377/cti"
        },
        {
          "name": "Submit #810105 | H2O-3 latest arbitrary local file disclosure",
          "tags": [
            "third-party-advisory"
          ],
          "url": "https://vuldb.com/submit/810105"
        },
        {
          "tags": [
            "exploit"
          ],
          "url": "https://vulnplus-note.wetolink.com/share/wWjmsfKHRJi3"
        }
      ],
      "timeline": [
        {
          "lang": "en",
          "time": "2026-05-16T00:00:00.000Z",
          "value": "Advisory disclosed"
        },
        {
          "lang": "en",
          "time": "2026-05-16T02:00:00.000Z",
          "value": "VulDB entry created"
        },
        {
          "lang": "en",
          "time": "2026-05-16T18:25:52.000Z",
          "value": "VulDB entry last update"
        }
      ],
      "title": "h2oai h2o-3 ImportFile API PersistNFS.java importFiles information disclosure"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "1af790b2-7ee1-4545-860a-a788eba489b5",
    "assignerShortName": "VulDB",
    "cveId": "CVE-2026-8750",
    "datePublished": "2026-05-17T10:45:10.231Z",
    "dateReserved": "2026-05-16T16:20:42.111Z",
    "dateUpdated": "2026-05-17T10:45:10.231Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}