{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "extracted_events": [
              {
                "introduced": "0"
              },
              {
                "last_affected": "2026.3.1"
              },
              {
                "fixed": "2026.3.1"
              }
            ],
            "source": [
              "AFFECTED_FIELD",
              "DESCRIPTION"
            ]
          },
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "a7e728c2f61705d484590c9876c114c0b4899feb"
            }
          ],
          "repo": "https://github.com/pimcore/pimcore",
          "type": "GIT"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "VulnCheck",
    "cwe_ids": [
      "CWE-79"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/109xxx/CVE-2026-109392.json"
  },
  "details": "Pimcore through 2026.3.1 contains a stored cross-site scripting vulnerability that allows authenticated backend users to inject scripts by storing unescaped URLs in ExternalImage fields. Attackers with data object edit permission can store attribute-breaking payloads that execute JavaScript in the admin origin when other users open version preview or diff views.",
  "id": "CVE-2026-109392",
  "modified": "2026-10-15T02:31:11.374327233Z",
  "published": "2026-10-12T15:16:39.934Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/109xxx/CVE-2026-109392.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-109392"
    },
    {
      "type": "ADVISORY",
      "url": "https://www.vulncheck.com/advisories/pimcore-through-2026.3.1-stored-xss-via-externalimage-field-version-preview"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/pimcore/pimcore"
    },
    {
      "type": "ARTICLE",
      "url": "https://github.com/pimcore/admin-ui-classic-bundle/blob/2.3/templates/admin/data_object/data_object/preview_version.html.twig#L198"
    },
    {
      "type": "ARTICLE",
      "url": "https://github.com/pimcore/pimcore/blob/v2026.3.1/models/DataObject/ClassDefinition/Data/ExternalImage.php#L169-L203"
    },
    {
      "type": "EVIDENCE",
      "url": "https://hackmd.io/@1ExmmukzRMWN7B4gQ4W-4Q/rJCbgCKjMe"
    }
  ],
  "schema_version": "1.9.0",
  "severity": [
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N",
      "type": "CVSS_V4"
    }
  ],
  "summary": "Pimcore through 2026.3.1 Stored XSS via ExternalImage Field Version Preview"
}