Nokogiri: Possible Use-After-Free when directly using `NokogirI::XML::XPathContext` beyond document lifetime

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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...

MGASA-2019-0035 Updated python-django packages fix security vulnerability

An upstream patch has been backported to fix a security vulnerability in python-django. CVE-2019-3498: Content spoofing possibility in the default 404 page An attacker could craft a malicious URL that could make spoofed content appear on the default page generated by the...