{
  "threat_severity" : "Moderate",
  "public_date" : "2025-07-05T00:00:00Z",
  "bugzilla" : {
    "description" : "php: NULL Pointer Dereference in PHP SOAP Extension via Large XML Namespace Prefix",
    "id" : "2378690",
    "url" : "https://bugzilla.redhat.com/show_bug.cgi?id=2378690"
  },
  "cvss3" : {
    "cvss3_base_score" : "5.9",
    "cvss3_scoring_vector" : "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H",
    "status" : "verified"
  },
  "cwe" : "CWE-476",
  "details" : [ "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.", "A vulnerability was found in PHP. If a SoapVar instance is created with a fully qualified name larger than 2G, this will cause a NULL pointer dereference resulting in a segmentation fault, leading to a denial of service." ],
  "affected_release" : [ {
    "product_name" : "Red Hat Enterprise Linux 8",
    "release_date" : "2026-01-27T00:00:00Z",
    "advisory" : "RHSA-2026:1412",
    "cpe" : "cpe:/a:redhat:enterprise_linux:8",
    "package" : "php:8.2-8100020260106091451.f7998665"
  }, {
    "product_name" : "Red Hat Enterprise Linux 8",
    "release_date" : "2026-02-10T00:00:00Z",
    "advisory" : "RHSA-2026:2470",
    "cpe" : "cpe:/a:redhat:enterprise_linux:8",
    "package" : "php:7.4-8100020260119075152.f7998665"
  }, {
    "product_name" : "Red Hat Enterprise Linux 9",
    "release_date" : "2025-12-18T00:00:00Z",
    "advisory" : "RHSA-2025:23309",
    "cpe" : "cpe:/a:redhat:enterprise_linux:9",
    "package" : "php:8.3-9070020251002063832.9"
  }, {
    "product_name" : "Red Hat Enterprise Linux 9",
    "release_date" : "2026-01-27T00:00:00Z",
    "advisory" : "RHSA-2026:1409",
    "cpe" : "cpe:/a:redhat:enterprise_linux:9",
    "package" : "php:8.2-9070020260107073439.9"
  } ],
  "package_state" : [ {
    "product_name" : "Red Hat Enterprise Linux 10",
    "fix_state" : "Fix deferred",
    "package_name" : "php",
    "cpe" : "cpe:/o:redhat:enterprise_linux:10"
  }, {
    "product_name" : "Red Hat Enterprise Linux 6",
    "fix_state" : "Fix deferred",
    "package_name" : "php",
    "cpe" : "cpe:/o:redhat:enterprise_linux:6"
  }, {
    "product_name" : "Red Hat Enterprise Linux 7",
    "fix_state" : "Fix deferred",
    "package_name" : "php",
    "cpe" : "cpe:/o:redhat:enterprise_linux:7"
  }, {
    "product_name" : "Red Hat Enterprise Linux 9",
    "fix_state" : "Fix deferred",
    "package_name" : "php",
    "cpe" : "cpe:/o:redhat:enterprise_linux:9"
  } ],
  "references" : [ "https://www.cve.org/CVERecord?id=CVE-2025-6491\nhttps://nvd.nist.gov/vuln/detail/CVE-2025-6491\nhttps://github.com/php/php-src/security/advisories/GHSA-453j-q27h-5p8x" ],
  "name" : "CVE-2025-6491",
  "mitigation" : {
    "value" : "Currently, no mitigation is currently available for this vulnerability.",
    "lang" : "en:us"
  },
  "csaw" : false
}