CVE-2024-10549

HIGH

h2o 3.46.0.1 - Denial of Service via /3/Parse Endpoint Regular Expression

Title source: llm
STIX 2.1

Description

A vulnerability in the `/3/Parse` endpoint of h2oai/h2o-3 version 3.46.0.1 allows for a denial of service (DoS) attack. The endpoint uses a user-specified string to construct a regular expression, which is then applied to another user-specified string. By sending multiple simultaneous requests, an attacker can exhaust all available threads, leading to a complete denial of service.

References (1)

Core 1
Core References

Scores

CVSS v3 7.5
EPSS 0.0055
EPSS Percentile 41.3%
Attack Vector NETWORK
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CISA SSVC

Vulnrichment
Exploitation poc
Automatable yes
Technical Impact partial

Details

CWE
CWE-1333
Status published
Products (3)
ai.h2o/h2o-core 3.30.0.7Maven
h2o/h2o 3.46.0.1
pypi/h2o 3.30.0.7PyPI
Published Mar 20, 2025
Tracked Since Feb 18, 2026