Use After Free Affecting ruby-nokogiri package, versions <1.19.4+dfsg-1


Severity

Recommended
low

Based on default assessment until relevant scores are available.

Threat Intelligence

EPSS
0.4% (34th percentile)

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  • Snyk IDSNYK-DEBIAN14-RUBYNOKOGIRI-17496308
  • published26 Jun 2026
  • disclosed25 Jun 2026

Introduced: 25 Jun 2026

CVE-2026-57436  (opens in a new tab)
CWE-416  (opens in a new tab)

How to fix?

Upgrade Debian:14 ruby-nokogiri to version 1.19.4+dfsg-1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream ruby-nokogiri package and not the ruby-nokogiri package as distributed by Debian. See How to fix? for Debian:14 relevant fixed versions and status.

Nokogiri is an open source XML and HTML library for the Ruby programming language. Prior to 1.19.4, Nokogiri::XML::Document#root= validated only that the new root was a Nokogiri::XML::Node, allowing a DTD node to be set as the document root. The result is a heap use-after-free during garbage collection or finalization, leading to an invalid memory read or potentially a segfault. This vulnerability is fixed in 1.19.4.

CVSS Base Scores

version 3.1