CVE-2024-10549

Name: CVE-2024-10549
Creator: NVD / NIST
Published: 2025-03-20T10:15:17.263+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.5/10EPSS 0.59%

Last modified Jun 17, 2026

CVE-2024-10549 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. 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. EPSS estimates a 0.59% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.0

7.5/10

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

EPSS Probability

0.59%

43.7th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-1333

Affected Software

Vendor	Product	Versions
H2o	H2o	3.46.0.1

References

https://huntr.com/bounties/ce7bd2d6-fd38-440d-a91a-dd8f3fc06bc2Exploit, Third Party Advisory

Timeline

Published: Mar 20, 2025
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2024-10549?

How severe is CVE-2024-10549?

CVE-2024-10549 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 0.59% probability of exploitation in the next 30 days.

How do I fix CVE-2024-10549?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2024-10549?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST