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CVE-2026-57436

1.7 low SSVC exploitation: none Analyzed
NVD · CVE.org

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.

Fix

Patch, vendor advisory and mitigation references on NVD 1

Every line above is quoted from NVD, CISA, Microsoft, the vendor's own advisory or DISA; nothing is generated.

Change history 1

  1. First seenCVSS 1.7 · nokogiriNVD modified 2026-10-25 23:10

Affected (CPE criteria) 1

  • cpe:2.3:a:nokogiri:nokogiri:*:*:*:*:*:ruby:*:*

References 1