cvedb.io
CVE-2025-6491
MEDIUM · CVSS 5.9
EPSS exploitation probability: 0%
Published 2025-07-13T22:15:23.353 · Last modified 2026-06-17T10:02:00.527

Summary

In PHP versions:8.1.* before 8.1.33, 8.2.* before 8.2.29, 8.3.* before 8.3.23, 8.4.* before 8.4.10 when parsing XML data in SOAP extensions, overly large (>2Gb) XML namespace prefix may lead to null pointer dereference. This may lead to crashes and affect the availability of the target server.

Affected products

php — php

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References

This product uses data from the NVD API but is not endorsed or certified by the NVD. Informational only; not professional security advice.