Inefficient Regular Expression Complexity Affecting ruby3.3 package, versions <3.3.6-1


Severity

Recommended
0.0
high
0
10

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Threat Intelligence

EPSS
1.42% (71st percentile)

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  • Snyk IDSNYK-ECHOLATEST-RUBY33-19643828
  • published8 Sept 2026
  • disclosed28 Oct 2024

Introduced: 28 Oct 2024

CVE-2024-49761  (opens in a new tab)
CWE-1333  (opens in a new tab)

How to fix?

Upgrade Echo:latest ruby3.3 to version 3.3.6-1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream ruby3.3 package and not the ruby3.3 package as distributed by Echo. See How to fix? for Echo:latest relevant fixed versions and status.

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.

CVSS Base Scores

version 3.1