CVE-2026-57436

Nokogiri is an open source XML and HTML library for the Ruby programming language. Prior to 1.19.4, Nokogiri::XML::Documentroot= validated only that the new root was a Nokogiri::XML::Node, allowing a DTD node to be set as the document root. The result is a heap use-after-free during garbage...

UBUNTU-CVE-2026-57236

Nokogiri is an open source XML and HTML library for the Ruby programming language. Prior to 1.19.4, calling Documentencoding= with an invalid encoding e.g., a non-string, or a string containing a null byte raises an exception, but only after freeing the document's current encoding string without...

UBUNTU-CVE-2026-57235

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...

UBUNTU-CVE-2026-57434

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...

UBUNTU-CVE-2026-57234

Nokogiri is an open source XML and HTML library for the Ruby programming language. Prior to 1.19.4, the NONET parse option, which Nokogiri turns on by default for Nokogiri::XML::Schema see CVE-2020-26247, was not correctly enforced on the JRuby implementation. As a result, a schema parsed with...

UBUNTU-CVE-2026-57436

Nokogiri is an open source XML and HTML library for the Ruby programming language. Prior to 1.19.4, Nokogiri::XML::Documentroot= validated only that the new root was a Nokogiri::XML::Node, allowing a DTD node to be set as the document root. The result is a heap use-after-free during garbage...

CVE-2026-57438

Nokogiri (Ruby) prior to 1.19.4 is vulnerable to a use-after-free in XInclude processing: Nokogiri::XML::Node#do_xinclude frees the xi:include node, its children, and namespaces, potentially leaving Ruby objects pointing at freed memory. This can lead to invalid memory reads/writes. The issue is ...

EUVD-2026-39428

Nokogiri is an open source XML and HTML library for the Ruby programming language. Prior to 1.19.4, Nokogiri::XML::XPathContext did not keep its source document alive for garbage collection. If an XPathContext outlived its document and the document was collected, evaluating an XPath expression...

CVE-2026-57437

Nokogiri is an open source XML and HTML library for the Ruby programming language. Prior to 1.19.4, Nokogiri::XML::XPathContext did not keep its source document alive for garbage collection. If an XPathContext outlived its document and the document was collected, evaluating an XPath expression...

CVE-2026-57436

Nokogiri is an open source XML and HTML library for the Ruby programming language. Prior to 1.19.4, Nokogiri::XML::Documentroot= validated only that the new root was a Nokogiri::XML::Node, allowing a DTD node to be set as the document root. The result is a heap use-after-free during garbage...

EUVD-2026-39426

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,...

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,...

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,...

CVE-2026-57434

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...

CVE-2026-57235

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...

CVE-2026-57234

Nokogiri (Ruby) prior to 1.19.4 has a vulnerability in the JRuby implementation of the NONET option for Nokogiri::XML::Schema, where default options could trigger network fetches for external resources, enabling SSRF or XXE. The issue is tied to the NONET behavior set by default for schema parsin...

CVE-2026-57234

Nokogiri is an open source XML and HTML library for the Ruby programming language. Prior to 1.19.4, the NONET parse option, which Nokogiri turns on by default for Nokogiri::XML::Schema see CVE-2020-26247, was not correctly enforced on the JRuby implementation. As a result, a schema parsed with...

EUVD-2026-39421

Nokogiri is an open source XML and HTML library for the Ruby programming language. Prior to 1.19.4, the NONET parse option, which Nokogiri turns on by default for Nokogiri::XML::Schema see CVE-2020-26247, was not correctly enforced on the JRuby implementation. As a result, a schema parsed with...

CVE-2026-57234 Nokogiri: XML::Schema on JRuby allows network requests when NONET is set, bypassing CVE-2020-26247

Nokogiri is an open source XML and HTML library for the Ruby programming language. Prior to 1.19.4, the NONET parse option, which Nokogiri turns on by default for Nokogiri::XML::Schema see CVE-2020-26247, was not correctly enforced on the JRuby implementation. As a result, a schema parsed with...

CVE-2026-57236

Nokogiri is an open source XML and HTML library for the Ruby programming language. Prior to 1.19.4, calling Documentencoding= with an invalid encoding e.g., a non-string, or a string containing a null byte raises an exception, but only after freeing the document's current encoding string without...