https://cve.radiocsirt.org/rss/recent/all/10 Most recent entries from all 2026-10-03T01:53:55.973545+00:00 Vulnerability-Lookup csirt@opendfir.org python-feedgen Contains only the most 10 recent entries. https://cve.radiocsirt.org/vuln/bell-cve-2026-57435 BELL-CVE-2026-57435 2026-10-03T01:53:55.977522+00:00

Affected: Alpaquita:stream: ruby-nokogiri

 https://cve.radiocsirt.org/vuln/brew-mikutter-cve-2026-57435 BREW-mikutter-CVE-2026-57435 — Nokogiri: Possible Use-After-Free when setting an attribute value via `Nokogiri::XML::Attr#value=` or `#content=` 2026-10-03T01:53:55.977580+00:00

Affected: Homebrew: mikutter

### Summary

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.

Nokogiri 1.19.4 preserves any already-wrapped attribute child nodes before replacing the attribute value.

JRuby is not affected.

### Severity

The Nokogiri maintainers have evaluated this as low severity. Reaching it requires an unusual API-usage pattern that does not arise during normal use. The application must directly access an attribute's child node and then replace that same attribute's value via `Attr#value=` or `#content=`. Nokogiri 1.19.4 makes this pattern safe with no change to the public API. Already-wrapped attribute child nodes are preserved before the value is replaced.

### Mitigation

Upgrade to Nokogiri 1.19.4 or later.

As a workaround, avoid accessing attribute child nodes directly via `Attr#child` or similar before mutating the same attribute’s value.

### Credit

This issue was responsibly reported by Zheng Yu from depthfirst.com.

 https://cve.radiocsirt.org/vuln/euvd-2026-330280 EUVD-2026-330280 2026-10-03T01:53:55.977632+00:00 EUVD-2026-330280 https://cve.radiocsirt.org/vuln/fkie_cve-2026-57435 fkie_cve-2026-57435 2026-10-03T01:53:55.977647+00:00

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.

 https://cve.radiocsirt.org/vuln/ghsa-phwj-rprq-35pp GHSA-phwj-rprq-35pp — Nokogiri: Possible Use-After-Free when setting an attribute value via `Nokogiri::XML::Attr#value=` or `#content=` 2026-10-03T01:53:55.977674+00:00

Affected: RubyGems: nokogiri

### Summary

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.

Nokogiri 1.19.4 preserves any already-wrapped attribute child nodes before replacing the attribute value.

JRuby is not affected.

### Severity

The Nokogiri maintainers have evaluated this as low severity. Reaching it requires an unusual API-usage pattern that does not arise during normal use. The application must directly access an attribute's child node and then replace that same attribute's value via `Attr#value=` or `#content=`. Nokogiri 1.19.4 makes this pattern safe with no change to the public API. Already-wrapped attribute child nodes are preserved before the value is replaced.

### Mitigation

Upgrade to Nokogiri 1.19.4 or later.

As a workaround, avoid accessing attribute child nodes directly via `Attr#child` or similar before mutating the same attribute’s value.

### Credit

This issue was responsibly reported by Zheng Yu from depthfirst.com.

 https://cve.radiocsirt.org/vuln/msrc_cve-2026-57435 msrc_CVE-2026-57435 — Nokogiri: Possible Use-After-Free when setting an attribute value via `Nokogiri::XML::Attr#value=` or `#content=` 2026-10-03T01:53:55.977711+00:00 msrc_CVE-2026-57435 https://cve.radiocsirt.org/vuln/ubuntu-cve-2026-57435 UBUNTU-CVE-2026-57435 2026-10-03T01:53:55.977727+00:00

Affected: 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

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.