Improper Restriction of XML External Entity Reference (XXE) in Nokogiri on JRuby

Not analysed yet

We haven’t published our analysis of this Advisory yet. Once a person has reviewed it, this page will say what’s vulnerable, what has to be true for your app to be affected, and how to check.

Severity and exploitation

• CISA KEV Not listed.
• EPSS 0.015, the 73rd percentile, on 9 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

1. 27 Sept 2021, 19:05 UTC Published by the maintainers as a GitHub repository advisory

Sources

• GitHub Advisory Database: GHSA-2rr5-8q37-2w7h
• OSV: GHSA-2rr5-8q37-2w7h
• github.com/sparklemotion/nokogiri/security/advisories/GHSA-2rr5-8q37-2w7h
• nvd.nist.gov/vuln/detail/CVE-2021-41098
• github.com/sparklemotion/nokogiri/commit/5bf729ff3cc84709ee3c3248c981584088bf9f6d
• github.com/rubysec/ruby-advisory-db/blob/master/gems/nokogiri/CVE-2021-41098.yml
• github.com/sparklemotion/nokogiri

Facts on this page come from the GitHub Advisory Database (CC-BY 4.0), OSV and the other sources listed, as published. We don’t reproduce full advisory descriptions, which can contain exploit code.