Inefficient Regular Expression Complexity Affecting ruby3.3 package, versions <3.3.7-2


Severity

Recommended
0.0
high
0
10

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Threat Intelligence

EPSS
0.76% (54th percentile)

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  • Snyk IDSNYK-ECHOLATEST-RUBY33-19643832
  • published8 Sept 2026
  • disclosed4 Mar 2025

Introduced: 4 Mar 2025

CVE-2025-27220  (opens in a new tab)
CWE-1333  (opens in a new tab)

How to fix?

Upgrade Echo:latest ruby3.3 to version 3.3.7-2 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.

In the CGI gem before 0.4.2 for Ruby, a Regular Expression Denial of Service (ReDoS) vulnerability exists in the Util#escapeElement method.

CVSS Base Scores

version 3.1