Out-of-bounds Read in Sparklemotion Nokogiri
CVE-2025-71346
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.
Vulnerability class: Buffer Overflow
CVSS v3 metric
CVSS v3 base score 2.9 (Low). Vector: CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L.
Affected products
Weakness classification (CWE)
References
- disclosure@vulncheck.com (vendor-advisory)
- disclosure@vulncheck.com (third-party-advisory)
Frequently asked questions
- What is CVE-2025-71346?
- CVE-2025-71346 is a low-severity vulnerability in Sparklemotion Nokogiri, classified under Out-of-bounds Read. CVSS score: 2.9/10. Published 2026-08-25.
- How severe is CVE-2025-71346?
- Low severity. CVSS v3 base score is 2.9 out of 10.