Description
A vulnerability in the `/3/ParseSetup` endpoint of h2oai/h2o-3 version 3.46.0.1 allows for a denial of service (DoS) attack. The endpoint applies a user-specified regular expression to a user-controllable string. This can be exploited by an attacker to cause inefficient regular expression complexity, leading to the exhaustion of server resources and making the server unresponsive.
Published: 2025-03-20
Score: 7.5 High
EPSS: < 1% Very Low
KEV: No
Impact: n/a
Action: n/a
AI Analysis

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Remediation

No vendor fix or workaround currently provided.

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Tracking

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Advisories
Source ID Title
EUVD EUVD EUVD-2025-7113 A vulnerability in the `/3/ParseSetup` endpoint of h2oai/h2o-3 version 3.46.0.1 allows for a denial of service (DoS) attack. The endpoint applies a user-specified regular expression to a user-controllable string. This can be exploited by an attacker to cause inefficient regular expression complexity, leading to the exhaustion of server resources and making the server unresponsive.
Github GHSA Github GHSA GHSA-7qq7-pvm9-x8rf H2O Vulnerable to Denial of Service (DoS) via `/3/ParseSetup` Endpoint
History

Mon, 14 Jul 2025 14:00:00 +0000

Type Values Removed Values Added
First Time appeared H2o
H2o h2o
CPEs cpe:2.3:a:h2o:h2o:3.46.0.1:*:*:*:*:*:*:*
Vendors & Products H2o
H2o h2o

Thu, 20 Mar 2025 19:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'poc', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Thu, 20 Mar 2025 10:15:00 +0000

Type Values Removed Values Added
Description A vulnerability in the `/3/ParseSetup` endpoint of h2oai/h2o-3 version 3.46.0.1 allows for a denial of service (DoS) attack. The endpoint applies a user-specified regular expression to a user-controllable string. This can be exploited by an attacker to cause inefficient regular expression complexity, leading to the exhaustion of server resources and making the server unresponsive.
Title Denial of Service by ReDOS in h2oai/h2o-3
Weaknesses CWE-1333
References
Metrics cvssV3_0

{'score': 7.5, 'vector': 'CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H'}

Subscriptions

H2o H2o
cve-icon MITRE

Status: PUBLISHED

Assigner: @huntr_ai

Published:

Updated: 2025-03-20T18:30:21.595Z

Reserved: 2024-10-30T16:49:39.286Z

Link: CVE-2024-10550

cve-icon Vulnrichment

Updated: 2025-03-20T17:52:10.356Z

cve-icon NVD

Status : Analyzed

Published: 2025-03-20T10:15:17.390

Modified: 2025-07-14T13:49:13.723

Link: CVE-2024-10550

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.

Weaknesses