CVE-2021-41098

Nokogiri is a Rubygem providing HTML, XML, SAX, and Reader parsers with XPath and CSS selector support. In Nokogiri v1.12.4 and earlier, on JRuby only, the SAX parser resolves external entities by default. Users of Nokogiri on JRuby who parse untrusted documents using any of these classes are affected: Nokogiri::XML::SAX::Parse, Nokogiri::HTML4::SAX::Parser or its alias Nokogiri::HTML::SAX::Parser, Nokogiri::XML::SAX::PushParser, and Nokogiri::HTML4::SAX::PushParser or its alias Nokogiri::HTML::SAX::PushParser. JRuby users should upgrade to Nokogiri v1.12.5 or later to receive a patch for this issue. There are no workarounds available for v1.12.4 or earlier. CRuby users are not affected.

• CWE-611

• https://github.com/sparklemotion/nokogiri/commit/5bf729ff3cc84709ee3c3248c981584088bf9f6dPatch, Third Party Advisory
• https://github.com/sparklemotion/nokogiri/security/advisories/GHSA-2rr5-8q37-2w7hThird Party Advisory
• https://github.com/sparklemotion/nokogiri/commit/5bf729ff3cc84709ee3c3248c981584088bf9f6dPatch, Third Party Advisory
• https://github.com/sparklemotion/nokogiri/security/advisories/GHSA-2rr5-8q37-2w7hThird Party Advisory

Published

Sep 27, 2021

Last Modified

Jun 17, 2026

Status

Modified

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