Vulnerability Database

309,134

Total vulnerabilities in the database

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.

  • Published: Jul 13, 2025
  • Updated: Nov 4, 2025
  • CVE: CVE-2025-6491
  • Severity: Medium
  • Exploit:

CVSS v3:

  • Severity: Medium
  • Score: 5.9
  • AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H

CWEs:

Software From Fixed in
php / php 8.1.0 8.1.33
php / php 8.2.0 8.2.29
php / php 8.3.0 8.3.23
php / php 8.4.0 8.4.10