Inefficient Regular Expression Complexity Affecting ruby3.3-rails-7.2 package, versions <7.2.3.1-r3


Severity

Recommended
0.0
high
0
10

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Threat Intelligence

EPSS
0.49% (40th percentile)

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  • Snyk IDSNYK-CHAINGUARDLATEST-RUBY33RAILS72-19520278
  • published4 Sept 2026
  • disclosed25 Aug 2026

Introduced: 25 Aug 2026

CVE-2026-79770  (opens in a new tab)
CWE-1333  (opens in a new tab)

How to fix?

Upgrade Chainguard ruby3.3-rails-7.2 to version 7.2.3.1-r3 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream ruby3.3-rails-7.2 package and not the ruby3.3-rails-7.2 package as distributed by Chainguard. See How to fix? for Chainguard relevant fixed versions and status.

Nokogiri versions before 1.19.3 contain regular expression denial of service vulnerabilities in the CSS selector tokenizer affecting string-literal and identifier tokenization. Attackers can inject adversarial CSS selectors into methods like Node#css, Node#at_css, and Searchable#search to cause exponential regex backtracking and denial of service.

CVSS Base Scores

version 3.1