{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "extracted_events": [
              {
                "introduced": "0"
              },
              {
                "fixed": "2026.1.7"
              },
              {
                "introduced": "2026.6.0-latest"
              },
              {
                "fixed": "2026.6.2"
              },
              {
                "introduced": "2026.7.0-latest"
              },
              {
                "fixed": "2026.7.1"
              },
              {
                "introduced": "2026.8.0-latest"
              },
              {
                "fixed": "2026.8.0-latest.1"
              }
            ],
            "source": [
              "AFFECTED_FIELD",
              "REFERENCES"
            ]
          },
          "events": [
            {
              "introduced": "0"
            },
            {
              "introduced": "06d03da34c4ed09ea59f917f045ba250d2b6320d"
            },
            {
              "introduced": "ded677e00beb0e9bae6e70b69582aecfb72b5477"
            },
            {
              "introduced": "fb9247e04a826ab8e4d91168b3c4c839ec40bccc"
            },
            {
              "fixed": "b6af77c0382ac61817e825e4e285217327772b54"
            },
            {
              "fixed": "ac368a8cac47e413b99f122c890e32c133a4bacc"
            },
            {
              "fixed": "cbf996f65aae3da1843224aa624bcd9a225931ac"
            },
            {
              "fixed": "b88e77d40524f929740726615f4c081efa3a405c"
            },
            {
              "fixed": "92eec47e8b477cb8b4ccdb237e26dc1ba8f8b76b"
            }
          ],
          "repo": "https://github.com/discourse/discourse",
          "type": "GIT"
        }
      ]
    }
  ],
  "aliases": [
    "GHSA-qp9j-3v7r-wrvr"
  ],
  "database_specific": {
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
      "CWE-20"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/72xxx/CVE-2026-72728.json"
  },
  "details": "Discourse is an open-source discussion platform. Prior to 2026.1.7, an authenticated user could submit specially formed URLs that bypassed the Onebox allowlist and embedded malicious content in a site. This issue is fixed in versions 2026.1.7, 2026.6.2, 2026.7.1, and 2026.8.0-latest.1.",
  "id": "CVE-2026-72728",
  "modified": "2026-08-12T03:51:40.954087745Z",
  "published": "2026-08-10T16:13:20.965Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/72xxx/CVE-2026-72728.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/discourse/discourse/security/advisories/GHSA-qp9j-3v7r-wrvr"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-72728"
    },
    {
      "type": "FIX",
      "url": "https://github.com/discourse/discourse/commit/92eec47e8b477cb8b4ccdb237e26dc1ba8f8b76b"
    }
  ],
  "schema_version": "1.9.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Discourse: Onebox iframe origin allowlist enforces URL authority boundary"
}