CVE-2026-57435
Description
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.
How to fix
- nokogiri nokogiri1.19.4 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| nokogiri nokogiri | v < 1.19.4 | 1.19.4 |
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