https://cve.radiocsirt.org Contains only the most 10 recent entries. http://www.rssboard.org/rss-specification python-feedgen en Sat, 03 Oct 2026 19:23:22 +0000 https://cve.radiocsirt.org/vuln/bell-cve-2026-57436 <p><strong>Affected:</strong> Alpaquita:stream: ruby-nokogiri</p> <p><strong>Affected:</strong> Alpaquita:stream: ruby-nokogiri</p> https://cve.radiocsirt.org/vuln/bell-cve-2026-57436 https://cve.radiocsirt.org/vuln/brew-mikutter-cve-2026-57436 <p><strong>Affected:</strong> Homebrew: mikutter</p> <p>### Summary</p> <p>`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.</p> <p>Nokogiri 1.19.4 restricts `Document#root=` to element nodes, raising `TypeError` for any other node type.</p> <p>This memory-safety issue affects only the CRuby implementation (libxml2). The JRuby implementation was not affected; the same input validation was added there for behavioral parity.</p> <p>### Severity</p> <p>The Nokogiri maintainers have evaluated this as low severity. This is only triggered by a programming error. It requires application code to assign a non-element node such as a DTD as the document root via `Document#root=`. Nokogiri 1.19.4 now raises `TypeError` instead of allowing a use-after-free. It cannot be triggered by untrusted input or through normal use of the public API.</p> <p>### Mitigation</p> <p>Upgrade to Nokogiri 1.19.4 or later.</p> <p>As a workaround, applications that cannot upgrade should avoid assigning a DTD (or any non-element node) via `Document#root=`.</p> <p>### Credit</p> <p>This issue was responsibly reported by Zheng Yu from depthfirst.com.</p> <p><strong>Affected:</strong> Homebrew: mikutter</p> <p>### Summary</p> <p>`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.</p> <p>Nokogiri 1.19.4 restricts `Document#root=` to element nodes, raising `TypeError` for any other node type.</p> <p>This memory-safety issue affects only the CRuby implementation (libxml2). The JRuby implementation was not affected; the same input validation was added there for behavioral parity.</p> <p>### Severity</p> <p>The Nokogiri maintainers have evaluated this as low severity. This is only triggered by a programming error. It requires application code to assign a non-element node such as a DTD as the document root via `Document#root=`. Nokogiri 1.19.4 now raises `TypeError` instead of allowing a use-after-free. It cannot be triggered by untrusted input or through normal use of the public API.</p> <p>### Mitigation</p> <p>Upgrade to Nokogiri 1.19.4 or later.</p> <p>As a workaround, applications that cannot upgrade should avoid assigning a DTD (or any non-element node) via `Document#root=`.</p> <p>### Credit</p> <p>This issue was responsibly reported by Zheng Yu from depthfirst.com.</p> https://cve.radiocsirt.org/vuln/brew-mikutter-cve-2026-57436 https://cve.radiocsirt.org/vuln/euvd-2026-330419 EUVD-2026-330419 https://cve.radiocsirt.org/vuln/euvd-2026-330419 https://cve.radiocsirt.org/vuln/fkie_cve-2026-57436 <p>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.</p> <p>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.</p> https://cve.radiocsirt.org/vuln/fkie_cve-2026-57436 https://cve.radiocsirt.org/vuln/ghsa-wjv4-x9w8-wm3h <p><strong>Affected:</strong> RubyGems: nokogiri</p> <p>### Summary</p> <p>`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.</p> <p>Nokogiri 1.19.4 restricts `Document#root=` to element nodes, raising `TypeError` for any other node type.</p> <p>This memory-safety issue affects only the CRuby implementation (libxml2). The JRuby implementation was not affected; the same input validation was added there for behavioral parity.</p> <p>### Severity</p> <p>The Nokogiri maintainers have evaluated this as low severity. This is only triggered by a programming error. It requires application code to assign a non-element node such as a DTD as the document root via `Document#root=`. Nokogiri 1.19.4 now raises `TypeError` instead of allowing a use-after-free. It cannot be triggered by untrusted input or through normal use of the public API.</p> <p>### Mitigation</p> <p>Upgrade to Nokogiri 1.19.4 or later.</p> <p>As a workaround, applications that cannot upgrade should avoid assigning a DTD (or any non-element node) via `Document#root=`.</p> <p>### Credit</p> <p>This issue was responsibly reported by Zheng Yu from depthfirst.com.</p> <p><strong>Affected:</strong> RubyGems: nokogiri</p> <p>### Summary</p> <p>`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.</p> <p>Nokogiri 1.19.4 restricts `Document#root=` to element nodes, raising `TypeError` for any other node type.</p> <p>This memory-safety issue affects only the CRuby implementation (libxml2). The JRuby implementation was not affected; the same input validation was added there for behavioral parity.</p> <p>### Severity</p> <p>The Nokogiri maintainers have evaluated this as low severity. This is only triggered by a programming error. It requires application code to assign a non-element node such as a DTD as the document root via `Document#root=`. Nokogiri 1.19.4 now raises `TypeError` instead of allowing a use-after-free. It cannot be triggered by untrusted input or through normal use of the public API.</p> <p>### Mitigation</p> <p>Upgrade to Nokogiri 1.19.4 or later.</p> <p>As a workaround, applications that cannot upgrade should avoid assigning a DTD (or any non-element node) via `Document#root=`.</p> <p>### Credit</p> <p>This issue was responsibly reported by Zheng Yu from depthfirst.com.</p> https://cve.radiocsirt.org/vuln/ghsa-wjv4-x9w8-wm3h https://cve.radiocsirt.org/vuln/msrc_cve-2026-57436 msrc_CVE-2026-57436 https://cve.radiocsirt.org/vuln/msrc_cve-2026-57436 https://cve.radiocsirt.org/vuln/ubuntu-cve-2026-57436 <p><strong>Affected:</strong> Ubuntu:Pro:14.04:LTS: ruby-nokogiri, Ubuntu:16.04:LTS: ruby-nokogiri, Ubuntu:18.04:LTS: ruby-nokogiri, Ubuntu:Pro:20.04:LTS: ruby-nokogiri, Ubuntu:Pro:22.04:LTS: ruby-nokogiri, Ubuntu:24.04:LTS: ruby-nokogiri, Ubuntu:25.10: ruby-nokogiri, Ubuntu:26.04:LTS: ruby-nokogiri</p> <p>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.</p> <p><strong>Affected:</strong> Ubuntu:Pro:14.04:LTS: ruby-nokogiri, Ubuntu:16.04:LTS: ruby-nokogiri, Ubuntu:18.04:LTS: ruby-nokogiri, Ubuntu:Pro:20.04:LTS: ruby-nokogiri, Ubuntu:Pro:22.04:LTS: ruby-nokogiri, Ubuntu:24.04:LTS: ruby-nokogiri, Ubuntu:25.10: ruby-nokogiri, Ubuntu:26.04:LTS: ruby-nokogiri</p> <p>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.</p> https://cve.radiocsirt.org/vuln/ubuntu-cve-2026-57436