GHSA-9cv2-cfxc-v4v2: Nokogiri: Null Pointer Dereference calling methods on uninitialized wrapper classes

June 19, 2026

Nokogiri contains a bug when calling certain methods on allocated-but-uninitialized native wrapper classes that inherit from Nokogiri::XML::Node. This caused a NULL pointer dereference that could crash the process.

Nokogiri 1.19.4 checks for missing native data pointers and raises a RuntimeError.

JRuby is not affected.

References

github.com/advisories/GHSA-9cv2-cfxc-v4v2
github.com/sparklemotion/nokogiri/security/advisories/GHSA-9cv2-cfxc-v4v2

Code Behaviors & Features

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