Pimcore: Unsafe PHP Deserialization in Multiple Locations Without allowed_classes Restriction

{
  "id": "a805c2734ac82033a024fd00fc22ffeb5d7845063d639e63fd1d720919887a23",
  "url": "https://osv.dev/vulnerability/CVE-2026-45162",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "Pimcore: Unsafe PHP Deserialization in Multiple Locations Without allowed_classes Restriction",
    "summary": "Pimcore is an Open Source Data & Experience Management Platform. Prior to 11.5.17 (LTS) and 12.3.7, multiple Pimcore locations call PHP's unserialize() on data from database columns and filesystem files without the allowed_classes restriction, including lib/Tool/Authentication.php, models/Site/Dao.php, models/DataObject/ClassDefinition/CustomLayout/Dao.php, models/Tool/TmpStore/Dao.php, models/Asset/WebDAV/Service.php, and admin-ui-classic-bundle/src/Helper/Dashboard.php, enabling object injection and remote code execution if an attacker can control the serialized data source. This issue is fixed in versions 11.5.17 (LTS) and 12.3.7.",
    "evidence": "osv:CVE-2026-45162",
    "products": [],
    "severity": "high",
    "structured": {
      "id": "CVE-2026-45162",
      "aliases": [
        "CVE-2026-45162",
        "GHSA-36fc-7wjg-mfvj"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/pimcore/pimcore",
              "type": "GIT",
              "events": [
                {
                  "introduced": "df14e025d3db615fc75b190e3c9f3cc1d68d7304"
                },
                {
                  "fixed": "d8a4b30690369f5325879b9f969796d6a4f57fa3"
                },
                {
                  "fixed": "4788bf3a3a7f2f760a8fe61e522565941e154e1e"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "range": [
                      {
                        "introduced": "12.0.0"
                      },
                      {
                        "fixed": "12.3.7"
                      }
                    ],
                    "source": "AFFECTED_FIELD",
                    "strategy": "StringRangeExpression"
                  },
                  {
                    "range": [
                      {
                        "fixed": "4788bf3a3a7f2f760a8fe61e522565941e154e1e"
                      }
                    ],
                    "source": "REFERENCES_COMMIT"
                  },
                  {
                    "range": [
                      {
                        "fixed": "d8a4b30690369f5325879b9f969796d6a4f57fa3"
                      }
                    ],
                    "source": "REFERENCES_TAG",
                    "original_tag": "v12.3.7"
                  }
                ]
              }
            }
          ],
          "versions": [
            "v12.3.5",
            "v12.3.4",
            "v12.3.3",
            "v12.3.2",
            "v12.3.1.1",
            "v12.3.1",
            "v12.3.0",
            "v12.2.1",
            "v12.2.0",
            "v12.1.0",
            "v12.0.0"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-45162.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:28.204285840Z",
      "provider": "osv",
      "references": [
        "https://github.com/pimcore/pimcore/releases/tag/v12.3.7",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/45xxx/CVE-2026-45162.json",
        "https://github.com/pimcore/pimcore/security/advisories/GHSA-36fc-7wjg-mfvj",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-45162",
        "https://github.com/pimcore/pimcore/commit/4788bf3a3a7f2f760a8fe61e522565941e154e1e",
        "https://github.com/pimcore/pimcore/pull/19119"
      ],
      "provider_metadata": {
        "cwe_ids": [
          "CWE-502"
        ],
        "cna_assigner": "GitHub_M",
        "unresolved_ranges": [
          {
            "extracted_events": [
              {
                "range": [
                  {
                    "fixed": "11.5.17"
                  }
                ],
                "source": "AFFECTED_FIELD",
                "strategy": "StringRangeExpression"
              }
            ]
          }
        ],
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/45xxx/CVE-2026-45162.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-45162",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 494734,
  "published_at": "2026-07-17T18:50:19.924+00:00"
}