Inefficient Regular Expression Complexity Affecting ruby3.1 package, versions <3.1.6


Severity

Recommended
0.0
medium
0
10

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Threat Intelligence

EPSS
2.45% (83rd percentile)

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  • Snyk IDSNYK-ECHOLATEST-RUBY31-21707423
  • published25 Oct 2026
  • disclosed31 Mar 2023

Introduced: 31 Mar 2023

CVE-2023-28756  (opens in a new tab)
CWE-1333  (opens in a new tab)

How to fix?

Upgrade Echo:latest ruby3.1 to version 3.1.6 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream ruby3.1 package and not the ruby3.1 package as distributed by Echo. See How to fix? for Echo:latest relevant fixed versions and status.

A ReDoS issue was discovered in the Time component through 0.2.1 in Ruby through 3.2.1. The Time parser mishandles invalid URLs that have specific characters. It causes an increase in execution time for parsing strings to Time objects. The fixed versions are 0.1.1 and 0.2.2.

CVSS Base Scores

version 3.1