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Advisory record · GHSA-7rrm-v45f-jp64

Nokogiri updates packaged dependency on libxml2 from 2.9.10 to 2.9.12

No CVSS score

Published by the GitHub Advisory Database at 17 May 2021, 20:52 UTC. agentprime has not analysed this yet, so whether it affects any app is not known.

PackageEcosystemAffectedFixed in
nokogiriRubyGems<1.11.41.11.4
Identifiers
GHSA-7rrm-v45f-jp64 · CVE-2021-47996
Published
17 May 2021
Updated
27 Aug 2026

Machine-written summary

Summary written by Claude Haiku from the source advisory. Not reviewed by a person.

Nokogiri versions before 1.11.4 bundle libxml2 versions before 2.9.12, which contain fixes for several CVEs including denial of service, information disclosure, and memory-safety issues such as heap overflows and use-after-free bugs. The source says exploitation of some of these depends on the application processing untrusted XML, and that Nokogiri's default parse options block the exponential entity expansion issue. Upgrade to Nokogiri 1.11.4 or later. This applies only to the packaged libxml2, not to system libraries.

Written 8 Nov 2026.

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

No source has published a CVSS score for this record yet.

  • CISA KEV Not listed.
  • EPSS No score.

Timeline

  1. 14 May 2021, 23:34 UTC Published by the maintainers as a GitHub repository advisory
  2. 31 Oct 2026, 15:16 UTC First seen by agentprime
  3. 31 Oct 2026, 15:16 UTC Confirmed by OSV

Sources

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.