CVE-2023-6038

highpriority · track · 32OT risk · elevatedEPSS 0.043 · 91 %ileEUUS

grimoire priorityP2 · Scheduled

Exploitable?

—

no known exploitation

Likely / severe?

4.34% (91st) EPSS

CVSS 7.5 · high

Is it mine?

3 products

Check your exposure

Who says so?

4 sources

cnnvd · enisa_euvd · nvd · osv

EPSS · scored 2026-10-27

A Local File Inclusion (LFI) vulnerability exists in the h2o-3 REST API, allowing unauthenticated remote attackers to read arbitrary files on the server with the permissions of the user running the h2o-3 instance. This issue affects the default installation and does not require user interaction. The vulnerability can be exploited by making specific GET or POST requests to the ImportFiles and ParseSetup endpoints, respectively. This issue was identified in version 3.40.0.4 of h2o-3.

cvss

Technical severity, 0–10. One row per scoring source.

9.3

010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · high–critical · 7.5–9.3

v3.17.5highCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:Nprimary · NVD / NIST USexploitability 3.9 · impact 3.6

v3.09.3criticalCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:L/A:Nsecondary · ENISA EU

v3.09.3criticalCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:L/A:Nsecondary · security@huntr.devexploitability 3.9 · impact 4.7

v3.09.3criticalCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:L/A:Nsecondary · OSV

v3.17.5highCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N/E:Hsecondary · CVSS-BT (t0sche)

ssvc

A stakeholder decision — act, attend, or track — from exploitation and impact.

Exploitation: poc · Automatable: yes · Technical Impact: partialcoordinatorcisa_ssvcUS

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-862USprimaryCWE-29USCWE-862US

affected products (3)

Products and version ranges known to be affected.

h2oai h2oai/h2o-3≤ unspecified ≤latestenisa_euvdEU
h2o h2oall versionsnvdUScpe:2.3:a:h2o:h2o:*:*:*:*:*:*:*:*
Maven ai.h2o:h2o-core≤ 3.40.0.4osvUSpkg:maven/ai.h2o/h2o-core

advisories (1)

Vendor and ecosystem advisories describing this.

GHSA-6mv8-95x5-xcq9H2O local file inclusion vulnerability2023-11-16ghsa · osvUS
A Local File Inclusion (LFI) vulnerability exists in the h2o-3 REST API, allowing unauthenticated remote attackers to read arbitrary files on the server with the permissions of the user running the h2o-3 instance. This issue affects the default installation and does not require user interaction. The vulnerability can be exploited by making specific GET or POST requests to the ImportFiles and ParseSetup endpoints, respectively. This issue was identified in version 3.40.0.4 of h2o-3.

also known as (3)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd nvd osv NVD CVE.org MITRE

published 2023-11-16modified 2026-06-17

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+11490 more

references (4)

External citations — patches, advisories, analysis.

scry

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