Bug 2492946 (CVE-2026-57437) - CVE-2026-57437 nokogiri: Nokogiri: Denial of Service due to improper XPathContext garbage collection
Summary: CVE-2026-57437 nokogiri: Nokogiri: Denial of Service due to improper XPathCon...
Keywords:
Status: NEW
Alias: CVE-2026-57437
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
low
low
Target Milestone: ---
Assignee: Product Security
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Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-06-25 15:02 UTC by OSIDB Bzimport
Modified: 2026-06-26 21:21 UTC (History)
25 users (show)

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Description OSIDB Bzimport 2026-06-25 15:02:33 UTC 
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 could read invalid memory and potentially segfault. This is only reachable when application code constructs an XPathContext directly and lets the document become unreachable while continuing to use the context. The normal Document#xpath, #css, and related search methods are not affected, and it is not triggerable by malicious document input. This vulnerability is fixed in 1.19.4.
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