Bugzilla – Bug 1191029
VUL-1: CVE-2021-41098: Improper Restriction of XML External Entity Reference (XXE) in Nokogiri on JRuby
Last modified: 2021-09-28 11:51:51 UTC
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.
We don't ship the JRuby part of Nokogiri. Closing bug.