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5.9 Medium

CVE-2025-6491 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…

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.

Affected products and versions

Product Affected versions Fixed in
PHP 8.4 earliest → < 8.4.10 8.4.10
PHP 8.3 earliest → < 8.3.23 8.3.23
PHP 8.2 earliest → < 8.2.29 8.2.29
PHP 8.1 earliest → < 8.1.33 8.1.33

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