Vulnerability from bitnami_vulndb
Published
2026-01-08 11:43
Modified
2026-01-26 15:09
Summary
Heap buffer overflow in array_merge()
Details

In PHP versions:8.1. before 8.1.34, 8.2. before 8.2.30, 8.3. before 8.3.29, 8.4. before 8.4.16, 8.5.* before 8.5.1, a heap buffer overflow occurs in array_merge() when the total element count of packed arrays exceeds 32-bit limits or HT_MAX_SIZE, due to an integer overflow in the precomputation of element counts using zend_hash_num_elements(). This may lead to memory corruption or crashes and affect the integrity and availability of the target server.

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{
  "affected": [
    {
      "package": {
        "ecosystem": "Bitnami",
        "name": "libphp",
        "purl": "pkg:bitnami/libphp"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "8.1.34"
            },
            {
              "introduced": "8.2.0"
            },
            {
              "fixed": "8.2.30"
            },
            {
              "introduced": "8.3.0"
            },
            {
              "fixed": "8.3.29"
            },
            {
              "introduced": "8.4.0"
            },
            {
              "fixed": "8.4.16"
            },
            {
              "introduced": "8.5.0"
            },
            {
              "fixed": "8.5.1"
            }
          ],
          "type": "SEMVER"
        }
      ],
      "severity": [
        {
          "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H",
          "type": "CVSS_V3"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2025-14178"
  ],
  "database_specific": {
    "cpes": [
      "cpe:2.3:a:php:php:*:*:*:*:*:*:*:*"
    ],
    "severity": "High"
  },
  "details": "In PHP versions:8.1.* before 8.1.34, 8.2.* before 8.2.30, 8.3.* before 8.3.29, 8.4.* before 8.4.16, 8.5.* before 8.5.1, a heap buffer overflow occurs in array_merge() when the total element count of packed arrays exceeds 32-bit limits or HT_MAX_SIZE, due to an integer overflow in the precomputation of element counts using zend_hash_num_elements(). This may lead to memory corruption or crashes and affect the integrity and availability of the target server.",
  "id": "BIT-libphp-2025-14178",
  "modified": "2026-01-26T15:09:56.435Z",
  "published": "2026-01-08T11:43:28.412Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/php/php-src/security/advisories/GHSA-h96m-rvf9-jgm2"
    },
    {
      "type": "WEB",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-14178"
    },
    {
      "type": "WEB",
      "url": "https://lists.debian.org/debian-lts-announce/2026/01/msg00019.html"
    }
  ],
  "schema_version": "1.6.2",
  "summary": "Heap buffer overflow in array_merge()"
}


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Detection rules are retrieved from Rulezet.