Nokogiri is an open source XML and HTML library for the Ruby programming language. Prior to 1.19.4, Nokogiri::XML::Document#root= 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 collection or finalization, leading to an invalid memory read or potentially a segfault. This vulnerability is fixed in 1.19.4.
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References
History
Thu, 25 Jun 2026 14:45:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Description | Nokogiri is an open source XML and HTML library for the Ruby programming language. Prior to 1.19.4, Nokogiri::XML::Document#root= 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 collection or finalization, leading to an invalid memory read or potentially a segfault. This vulnerability is fixed in 1.19.4. | |
| Title | Nokogiri: Possible Use-After-Free when setting `Document#root=` to an invalid node type | |
| Weaknesses | CWE-416 | |
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MITRE
Status: PUBLISHED
Assigner: GitHub_M
Published:
Updated: 2026-06-25T14:33:29.496Z
Reserved: 2026-06-24T13:21:20.729Z
Link: CVE-2026-57436
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