CVE-2026-57435 — Nokogiri: Possible Use-After-Free when setting an attribute value via `Nokogiri::XML::Attr#value=` or `#content=`

Description (CNA)

Nokogiri is an open source XML and HTML library for the Ruby programming language. Prior to 1.19.4, Nokogiri’s CRuby native extension could leave a Ruby wrapper pointing to freed memory when replacing the value of an XML attribute. If Ruby code had already accessed an attribute child node, Nokogiri::XML::Attr#value= could free the underlying native child node while the wrapper remained reachable through the document node cache. A later use of the freed child node or a Ruby GC mark could dereference an invalid pointer, causing an invalid read and a possible segfault. This vulnerability is fixed in 1.19.4.

Affected (CNA)

Vendor / product	Versions
sparklemotion / nokogiri	affected < 1.19.4

CWE

CWE-416, CWE-825

References

https://github.com/sparklemotion/nokogiri/security/advisories/GHSA-phwj-rprq-35pp

ADP enrichment

CISA-ADP

No English description supplied.

No references supplied.