# CVE-2025-71406

## Summary

- **CVE ID:** CVE-2025-71406
- **Severity:** HIGH
- **CVSS Score:** 8.7 (CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N)
- **CWE:** CWE-416
- **Published:** Aug 25, 2026
- **Last Modified:** Sep 1, 2026

## Description

Nokogiri before 1.18.4 bundles a vulnerable version of libxslt (prior to 1.1.43) that contains two use-after-free vulnerabilities: CVE-2025-24855 (use-after-free of the XPath context node due to xsltEvalXPathStringNs leaking xpathCtxt->node) and CVE-2024-55549 (use-after-free related to excluded result prefixes/namespaces). Processing crafted XSLT can trigger memory corruption. Nokogiri 1.18.4 upgrades the bundled libxslt to 1.1.43 to resolve these issues.

## Affected Products

- sparklemotion — nokogiri (0)
- sparklemotion — nokogiri (1.18.4)

## References

- [CNA](https://github.com/sparklemotion/nokogiri/security/advisories/GHSA-mrxw-mxhj-p664)
- [CNA](https://www.vulncheck.com/advisories/nokogiri-before-use-after-free-via-libxslt)

## Exploitation Prediction (EPSS)

- **EPSS Score:** 0.19%
- **EPSS Percentile:** 8.4

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