Inefficient Regular Expression Complexity Affecting rubygem-mysql2-doc package, versions <0:0.5.3-3.module+el8.10.0+1826+b62220b4


Severity

Recommended
medium

Based on Rocky Linux security rating.

Threat Intelligence

EPSS
0.57% (68th percentile)

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  • Snyk IDSNYK-ROCKY8-RUBYGEMMYSQL2DOC-11332560
  • published30 Jul 2025
  • 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 Rocky-Linux:8 rubygem-mysql2-doc to version 0:0.5.3-3.module+el8.10.0+1826+b62220b4 or higher.
This issue was patched in RLSA-2025:4063.

NVD Description

Note: Versions mentioned in the description apply only to the upstream rubygem-mysql2-doc package and not the rubygem-mysql2-doc package as distributed by Rocky-Linux. See How to fix? for Rocky-Linux:8 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