CVE-2025-6491 (GCVE-0-2025-6491)

Vulnerability from cvelistv5 – Published: 2025-07-13 22:10 – Updated: 2025-11-04 21:14
VLAI
Title
NULL Pointer Dereference in PHP SOAP Extension via Large XML Namespace Prefix
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.
Severity
5.9 (Medium)
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
SSVC
Exploitation: poc Automatable: no Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
  • CWE-476 - NULL Pointer Dereference
Assigner
php
References
Impacted products
Vendor Product Version
PHP Group PHP Affected: 8.1.* , < 8.1.33 (semver)
Affected: 8.2.* , < 8.2.29 (semver)
Affected: 8.3.* , < 8.3.23 (semver)
Affected: 8.4.* , < 8.4.10 (semver)
Create a notification for this product.
Date Public
2025-07-03 12:27
Credits
Ahmed Lekssays
Show details on NVD website
To clipboard 

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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

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  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
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