CVE-2026-57235

HighCVSS 8.2/10Last modified Oct 25, 2026

Description

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.

Metrics

CVSS 3.1 8.2/10CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H

Weakness enumeration

CWE-125 CWE-190

Affected software

Vendor	Product	Versions
sparklemotion	nokogiri	< 1.19.4

References

https://github.com/sparklemotion/nokogiri/security/advisories/GHSA-5prr-v3j2-97mhMitigation, Vendor Advisory

Timeline

Published: Jun 25, 2026
Last modified: Oct 25, 2026
NVD status: Analyzed

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