Nokogiri is an open source XML and HTML library for the Ruby programming language. Prior to 1.19.4, 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. This vulnerability is fixed in 1.19.4.

An update of the rubygem package has been released.

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available.

  - Nokogiri is an open source XML and HTML library for the Ruby programming language. Prior to 1.19.4,     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. This vulnerability is fixed in 1.19.4. (CVE-2026-57434)

Note that Nessus relies on the presence of the package as reported by the vendor.

ID	Name	Product	Family	Type	Severity
332554	Photon OS 5.0: Rubygem PHSA-2026-5.0-91-0911	Nessus	PhotonOS Local Security Checks	Local	medium
324558	Photon OS 5.0: Rubygem PHSA-2026-5.0-0911	Nessus	PhotonOS Local Security Checks	Local	medium
323619	Linux Distros Unpatched Vulnerability : CVE-2026-57434	Nessus	Misc.	Local	medium

Detections

Analytics

CVE-2026-57434

medium

Tenable Plugins

medium

medium

medium