CVE-2026-57435

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.

CVSS v3 7.5 HIGH

7.5^/10

CVSS v3 : HIGH

Vector :

Exploitability : 3.9 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://github.com/sparklemotion/nokogiri/security/advisories/GHSA-phwj-rprq-35pp	Mitigation Vendor Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:nokogiri:nokogiri:*:*:*:*:*:ruby:*:*

History

25 Oct 2026, 23:10

Type	Values Removed	Values Added
Summary		(es) Nokogiri es una biblioteca de código abierto de XML y HTML para el lenguaje de programación Ruby. Antes de 1.19.4, la extensión nativa CRuby de Nokogiri podría dejar un wrapper de Ruby apuntando a memoria liberada al reemplazar el valor de un atributo XML. Si el código Ruby ya había accedido a un nodo hijo de atributo, Nokogiri::XML::Attr#value= podría liberar el nodo hijo nativo subyacente mientras el wrapper permanecía accesible a través de la caché de nodos del documento. Un uso posterior del nodo hijo liberado o una marca de GC de Ruby podría desreferenciar un puntero inválido, causando una lectura inválida y un posible segfault. Esta vulnerabilidad se corrige en 1.19.4.

Information

Published : 2026-06-25 15:16

Updated : 2026-10-25 23:10

NVD link : CVE-2026-57435

Mitre link : CVE-2026-57435

CVE.ORG link : CVE-2026-57435

JSON object : View

Products Affected

nokogiri

nokogiri

CWE

CWE-416

Use After Free

CWE-825

Expired Pointer Dereference

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