CVE-2024-5550

5.3 MEDIUM
Published: June 06, 2024 Modified: October 15, 2025

Description

In h2oai/h2o-3 version 3.40.0.4, an exposure of sensitive information vulnerability exists due to an arbitrary system path lookup feature. This vulnerability allows any remote user to view full paths in the entire file system where h2o-3 is hosted. Specifically, the issue resides in the Typeahead API call, which when requested with a typeahead lookup of '/', exposes the root filesystem including directories such as /home, /usr, /bin, among others. This vulnerability could allow attackers to explore the entire filesystem, and when combined with a Local File Inclusion (LFI) vulnerability, could make exploitation of the server trivial.

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CVSS v3.x Details

0.0 Low Medium High Critical 10.0
Vector String
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

References to Advisories, Solutions, and Tools

Patch Vendor Advisory Exploit Third Party Advisory
https://huntr.com/bounties/e76372c2-39be-4984-a7c8-7048a75a25dc
Source: security@huntr.dev
Exploit Third Party Advisory
https://huntr.com/bounties/e76372c2-39be-4984-a7c8-7048a75a25dc
Source: af854a3a-2127-422b-91ae-364da2661108
Exploit Third Party Advisory

2 reference(s) from NVD

Quick Stats

CVSS v3 Score
5.3 / 10.0
EPSS (Exploit Probability)
1.2%
79th percentile
Exploitation Status
Not in CISA KEV

Weaknesses (CWE)

Affected Vendors

h2o