What’s Vulnerable › Vulnerabilities

CVE-2024-41946: REXML DoS vulnerability

• Severity: high (CVSS 7.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.2% 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 3.3.2 has a DoS vulnerability when it parses an XML that has many entity expansions with SAX2 or pull parser API. The REXML gem 3.3.3 or later include the patch to fix the vulnerability.

Affected products

• ruby rexml: before 3.3.3 — fixed in 3.3.3

How to fix

Upgrade to a fixed version: ruby rexml 3.3.3. Check the vendor advisory for mitigations.

References

• https://github.com/ruby/rexml/commit/033d1909a8f259d5a7c53681bcaf14f13bcf0368
• https://github.com/ruby/rexml/security/advisories/GHSA-5866-49gr-22v4
• https://www.ruby-lang.org/en/news/2008/08/23/dos-vulnerability-in-rexml
• https://www.ruby-lang.org/en/news/2024/08/01/dos-rexml-cve-2024-41946
• https://lists.debian.org/debian-lts-announce/2025/01/msg00011.html
• https://security.netapp.com/advisory/ntap-20250117-0007/

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