VulnerabilityModified

CVE-2024-43398

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.

MEDIUM 5.9EPSS 1.21%

Does this matter?

Lower severity and a low EPSS score (1.21%). Track it; it rarely justifies an emergency change on its own.

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.

CVSS 3.1: 5.9 MEDIUMCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
EPSS: 1.21% probability · 67th percentile
CISA KEV: Not listed
Weakness: CWE-776
Affected: ruby-lang/rexml · netapp/bootstrap os
Source: security-advisories@github.com

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

Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.