{
  "affected": [
    {
      "package": {
        "ecosystem": "Packagist",
        "name": "silverstripe/framework"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "5.2.16"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [],
  "database_specific": {
    "cwe_ids": [
      "CWE-1395",
      "CWE-79"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2024-07-17T16:00:48Z",
    "nvd_published_at": null,
    "severity": "MODERATE"
  },
  "details": "### Impact\nTinyMCE v6 has a configuration value `convert_unsafe_embeds` set to `false` which allows svg files containing javascript to be used in `\u003cobject\u003e` or `\u003cembed\u003e` tags, which can be used as a vector for XSS attacks.\n\nNote that `\u003cembed\u003e` tags are not allowed by default.\n\nAfter patching the default value of `convert_unsafe_embeds` will be set to `true`. This means that `\u003cobject\u003e` tags will be converted to iframes instead the next time the page is saved, which may break any pages that rely upon previously saved `\u003cobject\u003e` tags. Developers can override this configuration if desired to revert to the original behaviour.\n\nWe reviewed the potential impact of this vulnerability within the context of Silverstripe CMS. We concluded this is a medium impact vulnerability given how TinyMCE is used by Silverstripe CMS.\n\n### References:\n- https://www.silverstripe.org/download/security-releases/ss-2024-001\n- https://github.com/advisories/GHSA-5359-pvf2-pw78\n\n",
  "id": "GHSA-52cw-pvq9-9m5v",
  "modified": "2024-07-22T16:54:34Z",
  "published": "2024-07-17T16:00:48Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/silverstripe/silverstripe-framework/security/advisories/GHSA-52cw-pvq9-9m5v"
    },
    {
      "type": "WEB",
      "url": "https://github.com/FriendsOfPHP/security-advisories/blob/master/silverstripe/framework/SS-2024-001.yaml"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/advisories/GHSA-5359-pvf2-pw78"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/silverstripe/silverstripe-framework"
    },
    {
      "type": "WEB",
      "url": "https://www.silverstripe.org/download/security-releases/ss-2024-001"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N",
      "type": "CVSS_V3"
    },
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N",
      "type": "CVSS_V4"
    }
  ],
  "summary": "Silverstripe uses TinyMCE which allows svg files linked in object tags"
}