CVE-2024-43398

Name: CVE-2024-43398
Creator: NVD / NIST
Published: 2024-08-22T15:15:16.44+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 5.9/10EPSS 1.21%

Last modified Jun 17, 2026

CVE-2024-43398 is a medium-severity vulnerability rated 5.9/10 on the CVSS scale. REXML is an XML toolkit for Ruby. The REXML gem before 3.3.6 has a DoS vulnerability when it parses an XML that has many deep elements that have same local name attributes. EPSS estimates a 1.21% chance of exploitation in the next 30 days.

Description

REXML is an XML toolkit for Ruby. The REXML gem before 3.3.6 has a DoS vulnerability when it parses an XML that has many deep elements that have same local name attributes. If you need to parse untrusted XMLs with tree parser API like REXML::Document.new, you may be impacted to this vulnerability. If you use other parser APIs such as stream parser API and SAX2 parser API, this vulnerability is not affected. The REXML gem 3.3.6 or later include the patch to fix the vulnerability.

Metrics

CVSS 3.1

5.9/10

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H

EPSS Probability

1.21%

64.4th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-776

Affected Software

Vendor	Product	Versions
Ruby-Lang	Rexml	< 3.3.6
Netapp	Bootstrap Os	All versions

References

https://github.com/ruby/rexml/releases/tag/v3.3.6Release Notes
https://github.com/ruby/rexml/security/advisories/GHSA-vmwr-mc7x-5vc3Vendor Advisory
https://lists.debian.org/debian-lts-announce/2025/01/msg00011.html
https://security.netapp.com/advisory/ntap-20250103-0006/Third Party Advisory

Timeline

Published: Aug 22, 2024
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2024-43398?

How severe is CVE-2024-43398?

CVE-2024-43398 has a CVSS score of 5.9/10 (MEDIUM severity). The EPSS model estimates a 1.21% probability of exploitation in the next 30 days.

How do I fix CVE-2024-43398?

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-2024-43398?

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

Scan your code now

Source: NVD / NIST