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CVE-2026-57235

6.3 medium 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::NodeSet#[] (and its alias #slice) checked the requested index against the node set's bounds using a 32-bit-truncated copy of the index. A large negative index could pass the check and then be used at full width, reading outside the node set's storage. On CRuby this is an out-of-bounds read that typically crashes the process; on JRuby it is not memory-unsafe but returns an incorrect node. 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 6.3 · nokogiriNVD modified 2026-10-25 23:10

Affected (CPE criteria) 1

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

References 1