Bug 2523552 (CVE-2025-71346) - CVE-2025-71346 nokogiri: libxml2: Nokogiri: Heap buffer under-read in XML Schema validation
Summary: CVE-2025-71346 nokogiri: libxml2: Nokogiri: Heap buffer under-read in XML Sch...
Keywords:
Status: NEW
Alias: CVE-2025-71346
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
low
low
Target Milestone: ---
Assignee: Product Security DevOps Team
QA Contact:
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Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-08-25 15:33 UTC by OSIDB Bzimport
Modified: 2026-08-31 13:31 UTC (History)
24 users (show)

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Description OSIDB Bzimport 2026-08-25 15:33:13 UTC 
Nokogiri before 1.18.8 packages a vulnerable version of libxml2 (before 2.13.8) that contains a heap-based buffer under-read (CVE-2025-32415) in the xmlSchemaIDCFillNodeTables function in xmlschemas.c. The issue can be triggered when validating against an untrusted XML Schema, or when validating untrusted documents against trusted schemas that use xsd:keyref in combination with recursively defined types that have additional identity constraints. Upstream and MITRE rate this issue as low severity.
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