PHPCSUtils: Remote code execution via eval() in AbstractArrayDeclarationSniff::getActualArrayKey()

{
  "id": "4823976597000504cd99678ebc8c53bc8ee74a63035c1ed6314a579476aa0fdb",
  "url": "https://osv.dev/vulnerability/CVE-2026-65954",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "PHPCSUtils: Remote code execution via eval() in AbstractArrayDeclarationSniff::getActualArrayKey()",
    "summary": "PHPCSUtils is a suite of utility functions for use with PHP_CodeSniffer. From 1.0.0-alpha1 until 1.2.3, PHPCSUtils\\AbstractSniffs\\AbstractArrayDeclarationSniff::getActualArrayKey() evaluates attacker-controlled array-key expressions with eval(), allowing callback-form keys in untrusted PHP code scanned by an extending sniff to execute arbitrary commands on the scanning host. Known reachable paths include Universal.Arrays.DuplicateArrayKey and Universal.Arrays.MixedArrayKeyTypes. This issue is fixed in version 1.2.3.",
    "evidence": "osv:CVE-2026-65954",
    "products": [],
    "severity": "high",
    "structured": {
      "id": "CVE-2026-65954",
      "aliases": [
        "CVE-2026-65954",
        "GHSA-r6hr-vr92-vv28"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/phpcsstandards/phpcsutils",
              "type": "GIT",
              "events": [
                {
                  "introduced": "17c369202671ed42cfb9e653c3a865a68595fac6"
                },
                {
                  "fixed": "e8648633ff5b8219b1b3e6346ce85abfc30f1429"
                },
                {
                  "fixed": "5f35d9408c54d7b529501f3c688b6eae562aea1f"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "range": [
                      {
                        "introduced": "1.0.0-alpha1"
                      },
                      {
                        "last_affected": "1.2.2"
                      }
                    ],
                    "source": "AFFECTED_FIELD",
                    "strategy": "StringRangeExpression"
                  },
                  {
                    "range": [
                      {
                        "fixed": "e8648633ff5b8219b1b3e6346ce85abfc30f1429"
                      }
                    ],
                    "source": "REFERENCES_COMMIT"
                  },
                  {
                    "range": [
                      {
                        "fixed": "5f35d9408c54d7b529501f3c688b6eae562aea1f"
                      }
                    ],
                    "source": "REFERENCES_TAG",
                    "original_tag": "1.2.3"
                  }
                ]
              }
            }
          ],
          "versions": [
            "1.2.2",
            "1.2.1",
            "1.2.0",
            "1.1.3",
            "1.1.2",
            "1.1.1",
            "1.1.0",
            "1.0.12",
            "1.0.11",
            "1.0.10",
            "1.0.9",
            "1.0.8",
            "1.0.7",
            "1.0.6",
            "1.0.5",
            "1.0.4",
            "1.0.3",
            "1.0.2",
            "1.0.1",
            "1.0.0",
            "1.0.0-rc1",
            "1.0.0-alpha4",
            "1.0.0-alpha3",
            "1.0.0-alpha2",
            "1.0.0-alpha1"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-65954.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:52.508581852Z",
      "provider": "osv",
      "references": [
        "https://github.com/PHPCSStandards/PHPCSUtils/releases/tag/1.2.3",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/65xxx/CVE-2026-65954.json",
        "https://github.com/PHPCSStandards/PHPCSUtils/security/advisories/GHSA-r6hr-vr92-vv28",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-65954",
        "https://github.com/PHPCSStandards/PHPCSUtils/commit/e8648633ff5b8219b1b3e6346ce85abfc30f1429"
      ],
      "provider_metadata": {
        "cwe_ids": [
          "CWE-95"
        ],
        "cna_assigner": "GitHub_M",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/65xxx/CVE-2026-65954.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-65954",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 521408,
  "published_at": "2026-10-12T18:51:01.522+00:00"
}