{
  "affected": [
    {
      "package": {
        "ecosystem": "Packagist",
        "name": "phpcsstandards/phpcsutils"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "1.0.0-alpha1"
            },
            {
              "fixed": "1.2.3"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2026-65954"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-95"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2026-09-29T17:57:16Z",
    "nvd_published_at": null,
    "severity": "HIGH"
  },
  "details": "### Impact\n\nPHPCSUtils versions 1.0.0-alpha1 through 1.2.2 contain an arbitrary code execution vulnerability in `PHPCSUtils\\AbstractSniffs\\AbstractArrayDeclarationSniff::getActualArrayKey()`. The vulnerable method is reached by any sniff that extends `AbstractArrayDeclarationSniff` and calls `getActualArrayKey()`.\n\nRunning PHPCS over untrusted PHP code through such a sniff, for example, in a CI pipeline that lints pull requests, or on a developer machine reviewing third-party code, could lead to arbitrary command execution on the scanning host.\n\nThe vulnerability happens when the method determines the value of an array key using `eval()`. A maliciously crafted array key such as `\u0027system\u0027(\u0027id\u0027)` would be executed when the code was scanned.\n\n### Known attack vectors\n\nKnown code paths that reach the vulnerable method include the following PHPCSExtra sniffs:\n\n- `Universal.Arrays.DuplicateArrayKey`\n- `Universal.Arrays.MixedArrayKeyTypes`\n\nOther packages that call `AbstractArrayDeclarationSniff::getActualArrayKey()` may also be vulnerable.\n\n### Patches\n\nThis issue has been fixed in PHPCSUtils 1.2.3. We recommend all users upgrade to 1.2.3 or later.\n\n### Workaround\n\nUsers who cannot upgrade immediately can disable the sniffs that reach the vulnerable method by adding `\u003cexclude\u003e` tags to their custom ruleset (replace the placeholder standard and sniff names with the ones used in your setup):\n\n```xml\n\u003crule ref=\"Standard\"\u003e\n\t\u003cexclude name=\"Standard.Category.SniffName\"/\u003e\n\u003c/rule\u003e\n```\n\nFor example, to disable the two PHPCSExtra sniffs listed under \"Known attack vectors\":\n\n```xml\n\u003crule ref=\"Universal\"\u003e\n\t\u003cexclude name=\"Universal.Arrays.DuplicateArrayKey\"/\u003e\n\t\u003cexclude name=\"Universal.Arrays.MixedArrayKeyTypes\"/\u003e\n\u003c/rule\u003e\n```\n\nTo verify that the sniffs have been disabled, run PHPCS with the `-e` flag, which lists all the sniffs a standard will run. The excluded sniffs should no longer appear in the output:\n\n```\nphpcs -e --standard=/path/to/ruleset.xml\n```\n\n### Credits\n\nMany thanks to [@rodrigoprimo](https://github.com/rodrigoprimo) for responsibly disclosing this vulnerability.\n\n### How can I report a security bug?\n\nPlease report security vulnerabilities privately via [the \"Security and quality\" tab on the PHPCSUtils repository](https://github.com/PHPCSStandards/PHPCSUtils/security).",
  "id": "GHSA-r6hr-vr92-vv28",
  "modified": "2026-09-29T17:57:16Z",
  "published": "2026-09-29T17:57:16Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/PHPCSStandards/PHPCSUtils/security/advisories/GHSA-r6hr-vr92-vv28"
    },
    {
      "type": "WEB",
      "url": "https://github.com/PHPCSStandards/PHPCSUtils/pull/778"
    },
    {
      "type": "WEB",
      "url": "https://github.com/PHPCSStandards/PHPCSUtils/commit/9f596b50ea4498ea57b8cb341e920233b044debf"
    },
    {
      "type": "WEB",
      "url": "https://github.com/FriendsOfPHP/security-advisories/blob/master/phpcsstandards/phpcsutils/CVE-2026-65954.yaml"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/PHPCSStandards/PHPCSUtils"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "PHPCSUtils: Remote code execution via eval() in AbstractArrayDeclarationSniff::getActualArrayKey()"
}