Inefficient Regular Expression Complexity Affecting ruby:3.1/rubygem-mysql2-doc package, versions <0:0.5.4-1.module+el9.1.0+15737+76195479


Severity

Recommended
0.0
medium
0
10

Based on Red Hat Enterprise Linux security rating.

Threat Intelligence

EPSS
0.76% (54th percentile)

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  • Snyk IDSNYK-RHEL9-RUBY-12611837
  • published10 Sept 2025
  • disclosed3 Mar 2025

Introduced: 3 Mar 2025

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

How to fix?

Upgrade RHEL:9 ruby:3.1/rubygem-mysql2-doc to version 0:0.5.4-1.module+el9.1.0+15737+76195479 or higher.
This issue was patched in RHSA-2025:4488.

NVD Description

Note: Versions mentioned in the description apply only to the upstream ruby:3.1/rubygem-mysql2-doc package and not the ruby:3.1/rubygem-mysql2-doc package as distributed by RHEL. See How to fix? for RHEL:9 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