{
  "affected": [
    {
      "database_specific": {
        "source": "https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/10/GHSA-mf2p-h6hf-fcwm/GHSA-mf2p-h6hf-fcwm.json"
      },
      "package": {
        "ecosystem": "npm",
        "name": "tinymce",
        "purl": "pkg:npm/tinymce"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "8.5.1"
            },
            {
              "fixed": "8.9.3"
            }
          ],
          "type": "SEMVER"
        }
      ]
    },
    {
      "database_specific": {
        "source": "https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/10/GHSA-mf2p-h6hf-fcwm/GHSA-mf2p-h6hf-fcwm.json"
      },
      "package": {
        "ecosystem": "NuGet",
        "name": "TinyMCE",
        "purl": "pkg:nuget/TinyMCE"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "8.5.1"
            },
            {
              "fixed": "8.9.3"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "8.5.1",
        "8.6.0",
        "8.7.0",
        "8.8.0",
        "8.8.1",
        "8.8.2",
        "8.9.0",
        "8.9.1",
        "8.9.2"
      ]
    },
    {
      "database_specific": {
        "source": "https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/10/GHSA-mf2p-h6hf-fcwm/GHSA-mf2p-h6hf-fcwm.json"
      },
      "package": {
        "ecosystem": "Packagist",
        "name": "tinymce/tinymce",
        "purl": "pkg:composer/tinymce/tinymce"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "8.5.1"
            },
            {
              "fixed": "8.9.3"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "8.5.1",
        "8.6.0",
        "8.7.0",
        "8.8.0",
        "8.8.1",
        "8.8.2",
        "8.9.0",
        "8.9.1",
        "8.9.2"
      ]
    },
    {
      "database_specific": {
        "source": "https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/10/GHSA-mf2p-h6hf-fcwm/GHSA-mf2p-h6hf-fcwm.json"
      },
      "package": {
        "ecosystem": "npm",
        "name": "tinymce",
        "purl": "pkg:npm/tinymce"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "7.9.3"
            },
            {
              "fixed": "7.9.4"
            }
          ],
          "type": "SEMVER"
        }
      ],
      "versions": [
        "7.9.3"
      ]
    },
    {
      "database_specific": {
        "source": "https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/10/GHSA-mf2p-h6hf-fcwm/GHSA-mf2p-h6hf-fcwm.json"
      },
      "package": {
        "ecosystem": "NuGet",
        "name": "TinyMCE",
        "purl": "pkg:nuget/TinyMCE"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "7.9.3"
            },
            {
              "fixed": "7.9.4"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "7.9.3"
      ]
    },
    {
      "database_specific": {
        "source": "https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/10/GHSA-mf2p-h6hf-fcwm/GHSA-mf2p-h6hf-fcwm.json"
      },
      "package": {
        "ecosystem": "Packagist",
        "name": "tinymce/tinymce",
        "purl": "pkg:composer/tinymce/tinymce"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "7.9.3"
            },
            {
              "fixed": "7.9.4"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "7.9.3"
      ]
    }
  ],
  "aliases": [
    "CVE-2026-116675"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-79"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2026-10-27T21:07:12Z",
    "nvd_published_at": "2026-10-27T17:16:59Z",
    "severity": "HIGH"
  },
  "details": "### Impact\nStored XSS vulnerability in the media plugin. Attackers can inject malicious scripts via elements crafted through the data-mce-object attribute, which are created and executed before sanitization. Impacts users of TinyMCE with the media plugin enabled.\n\n### Patches\nThis vulnerability has been patched in TinyMCE 8.9.3 and TinyMCE 7.9.4 by ensuring that, when using the media plugin, any content created through the data-mce-object attribute is properly sanitized first.\n\n### Workarounds\nNo official workaround available.\n\n### Fix\nTo avoid this vulnerability:\n\nUpgrade to TinyMCE 8.9.3 or higher.\nUpgrade to TinyMCE 7.9.4 or higher.\n\n### Acknowledgements\nTiny thanks [Fariskhi Vidyan](https://github.com/farisv) and David Vieira Kurz (HiSolutions AG) for their help identifying this vulnerability.",
  "id": "GHSA-mf2p-h6hf-fcwm",
  "modified": "2026-10-27T21:15:04.912450737Z",
  "published": "2026-10-27T21:07:12Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/tinymce/tinymce/security/advisories/GHSA-mf2p-h6hf-fcwm"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-116675"
    },
    {
      "type": "WEB",
      "url": "https://github.com/tinymce/tinymce/commit/bd1ab5ef024c648c3f9c0b409e54a6c227c7d8a2"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/tinymce/tinymce"
    },
    {
      "type": "WEB",
      "url": "https://github.com/tinymce/tinymce/releases/tag/8.9.3"
    },
    {
      "type": "WEB",
      "url": "https://www.tiny.cloud/docs/tinymce/7/7.9.4-release-notes/#overview"
    },
    {
      "type": "WEB",
      "url": "https://www.tiny.cloud/docs/tinymce/latest/8.9.3-release-notes/#overview"
    }
  ],
  "schema_version": "1.9.2",
  "severity": [
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N",
      "type": "CVSS_V4"
    }
  ],
  "summary": "TinyMCE Cross-Site Scripting (XSS) vulnerability using media plugin `data-mce-object` serialization"
}