{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "extracted_events": [
              {
                "introduced": "0"
              },
              {
                "fixed": "2.1.17"
              }
            ],
            "source": [
              "AFFECTED_FIELD",
              "REFERENCES"
            ]
          },
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "3229c29c771ded4d247ed79b2ccd2cd05c4e74b4"
            },
            {
              "fixed": "53197ab5a142e6b0b76127cb790726b274eaf1bc"
            },
            {
              "fixed": "2e46d5128f3927cd93543b5fff8d81b31d35ce77"
            }
          ],
          "repo": "https://github.com/basecamp/trix",
          "type": "GIT"
        }
      ]
    }
  ],
  "aliases": [
    "GHSA-qmpg-8xg6-ph5q"
  ],
  "database_specific": {
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
      "CWE-79"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/73xxx/CVE-2026-73426.json"
  },
  "details": "Trix is a what-you-see-is-what-you-get rich text editor for everyday writing. Prior to 2.1.17, Trix is vulnerable to cross-site scripting when a data-trix-serialized-attributes attribute bypasses the DOMPurify sanitizer. An attacker can craft HTML containing a data-trix-serialized-attributes attribute with a malicious payload that, when rendered, executes arbitrary JavaScript in the user's session and may perform unauthorized actions or disclose sensitive information. This issue is fixed in version 2.1.17.",
  "id": "CVE-2026-73426",
  "modified": "2026-08-20T03:30:10.798898658Z",
  "published": "2026-08-18T14:24:27.542Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/basecamp/trix/releases/tag/v2.1.17"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/73xxx/CVE-2026-73426.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/basecamp/trix/security/advisories/GHSA-qmpg-8xg6-ph5q"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-73426"
    },
    {
      "type": "FIX",
      "url": "https://github.com/basecamp/trix/commit/3229c29c771ded4d247ed79b2ccd2cd05c4e74b4"
    },
    {
      "type": "FIX",
      "url": "https://github.com/basecamp/trix/commit/53197ab5a142e6b0b76127cb790726b274eaf1bc"
    },
    {
      "type": "FIX",
      "url": "https://github.com/basecamp/trix/pull/1282"
    }
  ],
  "schema_version": "1.9.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:N",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Trix: Stored XSS vulnerability through serialized attributes"
}