VYPR
Unrated severityNVD Advisory· Published Jul 13, 2025· Updated Nov 4, 2025

NULL Pointer Dereference in PHP SOAP Extension via Large XML Namespace Prefix

CVE-2025-6491

Description

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.

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Affected products

155

Patches

Vulnerability mechanics

References

1

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