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 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.
- Score
- CVSS 3.1 5.9 Medium
- Status
- Modified - security@php.net
- Published
- 2025-07-13
- Last modified
- 2025-11-04
- Weaknesses
- CWE-476
Affected products
References
- https://github.com/php/php-src/security/advisories/GHSA-453j-q27h-5p8x
- http://www.openwall.com/lists/oss-security/2025/07/11/4
- https://lists.debian.org/debian-lts-announce/2025/07/msg00017.html
