CVE-2025-71346

Description

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.

CVSS Vector

References

• https://github.com/sparklemotion/nokogiri/security/advisories/GHSA-5w6v-399v-w3cc
• https://www.vulncheck.com/advisories/nokogiri-before-heap-buffer-under-read-via-xml-schema