Predictive Vulnerability Intelligence.

Product

  • Product
  • Pricing
  • Documentation

Company

  • About
  • Partnerships
  • Blog
  • Support

Legal

  • Terms
  • Privacy
  • Data Licensing

© 2026 FAUCET Technologies LLC. All rights reserved.

CVE-2023-6038

36
FAUCET Score

CVE-2023-6038 is a Local File Inclusion (LFI) vulnerability in the h2o-3 REST API, specifically affecting h2o-3 version 3.40.0.4. This allows unauthenticated attackers to read arbitrary files on the server. With a CVSS score of 7.5 (HIGH), it requires no user interaction and has a high impact on confidentiality. While not currently in CISA's KEV catalog, exploit templates are available for tools like Nuclei, and it has garnered significant community discussion and media coverage, indicating a high potential for exploitation.

Impacted Technologies

VendorProductVersion(s)CPE
Range not provided by sourceCPE matchmatch criteria
cpe:2.3:a:h2o:h2o:-:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

9.3CRITICAL

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:L/A:N

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
CHANGED
Confidentiality Impact
HIGH
Integrity Impact
LOW
Availability Impact
NONE
Exploitability Score
3.9
Impact Score
4.7
CvssVersion
3.0

Exploit Intelligence

EPSS Score
4.34%
Probability of exploitation in next 30 days
EPSS Percentile
90.2%
Percentile rank of EPSS score among Peer Group
As of 2026-07-24
Model: v2026.06.15
Nuclei: CVE-2023-6038 · Dec 20, 2023
This CVE's current EPSS score of 0.0434 is in the 83rd percentile among its peer group of 51,466 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 GitHub mentions.

Media Mentions

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Vendor Advisories (1)

mavenGHSA-6mv8-95x5-xcq9critical

H2O local file inclusion vulnerability

Nov 16, 2023

References

huntr.com / bounties/380fce33-fec5-49d9-a101-12c972125d8c
Exploit