Advisory Weakness Curation

Nokogiri Inefficient Regular Expression Complexity ## Summary Nokogiri `< v1.13.4` contains an inefficient regular expression that is susceptible to excessive backtracking when attempting to detect encoding in HTML documents. ## Mitigation Upgrade to Nokogiri `>= 1.13.4`. ## Severity The Nokogiri maintainers have evaluated this as **High Severity** 7.5 (CVSS3.1) https://www.first.org/cvss/calculator/3.1#CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H. ## References CWE-1333 https://cwe.mitre.org/data/definitions/1333.html Inefficient Regular Expression Complexity ## Credit This vulnerability was reported by HackerOne user ooooooo_q (ななおく).

Inefficient Regular Expression Complexity Nokogiri is an open source XML and HTML library for Ruby. Nokogiri `< v1.13.4` contains an inefficient regular expression that is susceptible to excessive backtracking when attempting to detect encoding in HTML documents. Users are advised to upgrade to Nokogiri `>= 1.13.4`. There are no known workarounds for this issue.