CVE-2026-57235 — Nokogiri: Possible Out-of-Bounds Read in `Nokogiri::XML::NodeSet#[]`

Description (CNA)

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.

Affected (CNA)

Vendor / product	Versions
sparklemotion / nokogiri	affected < 1.19.4

CWE

CWE-125, CWE-190

References

https://github.com/sparklemotion/nokogiri/security/advisories/GHSA-5prr-v3j2-97mh

ADP enrichment

CISA-ADP

No English description supplied.

No references supplied.