CVE intelligence

CVE-2024-49761

Vulnerability intelligence

Published Oct 28, 2024Sources checked Oct 24, 2026

7.5HIGHCVSS out of 10

What this means

Review the available evidence

CVE-2024-49761 and is rated High severity with a CVSS score of 7.5. It is not in the current CISA KEV record we collected. That does not prove exploitation has not occurred.

What to do next

Remediation and response

Microsoft Security Response Center guidance

Vendor revision: Aug 12, 2026

Vendor remediation details

CBL-Mariner Releases

Vendor-listed releases

3.2.7-3
3.1.4-8
3.3.5-1
3.3.9-1

CISA KEVNot listedBased on the latest collected catalog

EPSS1.4%Estimated 30-day exploitation probability

Ransomware useNot markedCISA KEV ransomware field

Threat actors0Source-linked actor relationships

Overview

What is CVE-2024-49761?

REXML is an XML toolkit for Ruby. The REXML gem before 3.3.9 has a ReDoS vulnerability when it parses an XML that has many digits between &# and x...; in a hex numeric character reference (&#x...;).

This does not happen with Ruby 3.2 or later. Ruby 3.1 is the only affected maintained Ruby.

The REXML gem 3.3.9 or later include the patch to fix the vulnerability.

Source: NVD