CVE-2025-6491
Medium
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.
SeverityMedium
CVSS5.9
Exploit probability—
Product
Php
PublishedJul 13, 2025
First seenJul 13, 2025
Weakness typeCWE-476NULL pointer dereference
How to fix
Update
- php php8.1.33, 8.2.29, 8.3.23, 8.4.10 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| php php | 8.1.0 ≤ v < 8.1.33, 8.2.0 ≤ v < 8.2.29, 8.3.0 ≤ v < 8.3.23, 8.4.0 ≤ v < 8.4.10 | 8.1.33, 8.2.29, 8.3.23, 8.4.10 |
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