CVE-2026-57434
High
Description
Nokogiri is an open source XML and HTML library for the Ruby programming language. Prior to 1.19.4, Nokogiri contains a bug when calling certain methods on allocated-but-uninitialized native wrapper classes that inherit from Nokogiri::XML::Node. This caused a NULL pointer dereference that could crash the process. This vulnerability is fixed in 1.19.4.
SeverityHigh
CVSS7.5
Exploit probability—
ProductNokogiri
PublishedJun 25, 2026
First seenJun 25, 2026
Weakness typeCWE-476NULL pointer dereference
How to fix
Update
- 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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