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CVE-2024-43398

20
FAUCET Score

CVE-2024-43398 is a Denial of Service (DoS) vulnerability in the REXML Ruby gem (versions prior to 3.3.6), affecting products like NetApp and Ruby-lang that utilize it. This flaw occurs when parsing untrusted XML documents with deeply nested elements sharing the same local name attributes via the tree parser API. Rated Medium (CVSS 5.9), it has a network attack vector and high attack complexity, potentially leading to system unavailability with no impact on confidentiality or integrity. There is currently no evidence of active exploitation, public exploit code, or significant community discussion surrounding this vulnerability.

Impacted Technologies

VendorProductVersion(s)CPE
< 3.3.6CPE matchmatch criteria
cpe:2.3:a:ruby-lang:rexml:*:*:*:*:*:ruby:*:*
Range not provided by sourceCPE matchmatch criteria
cpe:2.3:o:netapp:bootstrap_os:-:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

5.9MEDIUM

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

Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
2.2
Impact Score
3.6
CvssVersion
3.1

Exploit Intelligence

EPSS Score
1.21%
Probability of exploitation in next 30 days
EPSS Percentile
65.1%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0120 is in the 31st percentile among its peer group of 19,955 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.0 Bluesky, 0.0 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (33)

microsoftpatch availablevia msrc
Product: Azure Linux 3.0 x64Fixed in: 3.3.5-1
microsoftpatch availablevia msrc
Product: 19723-17086Fixed in: 3.1.7-1
microsoftpatch availablevia msrc
Product: 19999-17086Fixed in: 3.2.9-1
microsoftpatch availablevia msrc
Product: cbl2 rubygem-rexml 3.2.9-1 on CBL Mariner 2.0Fixed in: 3.2.9-1
microsoftpatch availablevia msrc
Product: cbl2 ruby 3.1.4-9 on CBL Mariner 2.0Fixed in: 3.1.7-1
microsoftpatch availablevia msrc
Product: azl3 rubygem-rexml 3.3.4-1 on Azure Linux 3.0Fixed in: 3.3.9-1
microsoftpatch availablevia msrc
Product: azl3 rubygem-rexml 3.3.9-1 on Azure Linux 3.0Fixed in: 3.3.9-1
microsoftpatch availablevia msrc
Product: azl3 ruby 3.3.3-2 on Azure Linux 3.0Fixed in: 3.3.5-1
microsoftpatch availablevia msrc
Product: azl3 ruby 3.3.5-1 on Azure Linux 3.0Fixed in: 3.3.5-1
microsoftpatch availablevia msrc
Product: Azure Linux 3.0 ARMFixed in: 3.3.5-1
microsoftpatch availablevia msrc
Product: 17596-17084Fixed in: 3.3.5-1
microsoftpatch availablevia msrc
Product: 17670-17084Fixed in: 3.3.5-1
microsoftpatch availablevia msrc
Product: 17652-17084Fixed in: 3.3.9-1
microsoftpatch availablevia msrc
Product: 17669-17084Fixed in: 3.3.9-1
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 8Fixed in: ruby:3.1-8100020250407112943.489197e6
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 8Fixed in: pcs-0:0.10.18-2.el8_10.2
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 8.6 Telecommunications Update ServiceFixed in: pcs-0:0.10.12-6.el8_6.6
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 8.6 Update Services for SAP SolutionsFixed in: pcs-0:0.10.12-6.el8_6.6
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 8.8 Extended Update SupportFixed in: pcs-0:0.10.15-4.el8_8.3
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 9Fixed in: ruby:3.3-9040020240906110954.9
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 9Fixed in: ruby:3.1-9050020250404144903.9
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 8Fixed in: ruby:3.3-8100020240906074654.489197e6
View patch
rubygemspatch availablevia ghsa
Product: rexmlFixed in: 3.3.6
github_advisoryvendor investigatingvia nvd_reference
View patch
redhatno patchvia redhat_api
Product: Red Hat 3scale API Management Platform 2Fixed in: 3scale-toolbox-container
redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 9Fixed in: ruby
redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 9Fixed in: pcs
redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 8Fixed in: ruby:2.5/ruby
redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 8Fixed in: ruby
redhatend of lifevia redhat_api
Product: Red Hat 3scale API Management Platform 2Fixed in: 3scale-amp-zync-container
redhatend of lifevia redhat_api
Product: Red Hat 3scale API Management Platform 2Fixed in: 3scale-amp-system-container
redhatend of lifevia redhat_api
Product: Red Hat Satellite 6Fixed in: foreman
redhatend of lifevia redhat_api
Product: Red Hat 3scale API Management Platform 2Fixed in: 3scale-amp-backend-container

Vendor Advisories (4)

microsoft2024-Dec/CVE-2024-43398

CVE-2024-43398

Dec 10, 2024
rubygemsGHSA-vmwr-mc7x-5vc3high

REXML denial of service vulnerability

Aug 22, 2024
redhatCVE-2024-43398Moderate

rexml: DoS vulnerability in REXML

Aug 22, 2024
microsoft2024-Aug/CVE-2024-43398Moderate

REXML denial of service vulnerability

Aug 13, 2024

References

lists.debian.org / debian-lts-announce/2025/01/msg00011.html
security.netapp.com / advisory/ntap-20250103-0006
Third Party Advisory
github.com / ruby/rexml/releases/tag/v3.3.6
Release Notes
github.com / ruby/rexml/security/advisories/GHSA-vmwr-mc7x-5vc3
Vendor Advisory