What’s Vulnerable › Vulnerabilities

CVE-2024-41123: REXML DoS vulnerability

• Severity: high (CVSS 7.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.3% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2024-08-01 · updated 2026-06-17
• Weakness: CWE-400

Description

REXML is an XML toolkit for Ruby. The REXML gem before 3.3.2 has some DoS vulnerabilities when it parses an XML that has many specific characters such as whitespace character, `>]` and `]>`. The REXML gem 3.3.3 or later include the patches to fix these vulnerabilities.

Affected products

• ruby rexml: before 3.2.7; from 3.2.8 before 3.3.2 — fixed in 3.2.7, 3.3.2

How to fix

Upgrade to a fixed version: ruby rexml 3.2.7, 3.3.2. Check the vendor advisory for mitigations.

References

• https://github.com/ruby/rexml/security/advisories/GHSA-4xqq-m2hx-25v8
• https://github.com/ruby/rexml/security/advisories/GHSA-r55c-59qm-vjw6
• https://github.com/ruby/rexml/security/advisories/GHSA-vg3r-rm7w-2xgh
• https://www.ruby-lang.org/en/news/2024/08/01/dos-rexml-cve-2024-41123
• https://lists.debian.org/debian-lts-announce/2025/01/msg00011.html
• https://security.netapp.com/advisory/ntap-20241227-0005/

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