# CVE-2025-71346

## Summary

- **CVE ID:** CVE-2025-71346
- **Severity:** HIGH
- **CVSS Score:** 8.7 (CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N)
- **CWE:** CWE-125
- **Published:** Aug 25, 2026
- **Last Modified:** Sep 1, 2026

## 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.

## Affected Products

- sparklemotion — nokogiri (0)
- sparklemotion — nokogiri (1.18.8)

## References

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

## Exploitation Prediction (EPSS)

- **EPSS Score:** 0.18%
- **EPSS Percentile:** 7.7

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_Exported from OnDuty AI Vulnerability Intelligence on 2026-09-17._