{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "extracted_events": [
              {
                "range": [
                  {
                    "introduced": "8.1"
                  },
                  {
                    "fixed": "8.1.4.1"
                  }
                ],
                "source": "AFFECTED_FIELD",
                "strategy": "StringRangeExpression"
              },
              {
                "range": [
                  {
                    "introduced": "0"
                  },
                  {
                    "fixed": "8.0.5.2"
                  }
                ],
                "source": "AFFECTED_FIELD",
                "strategy": "StringRangeExpression"
              },
              {
                "range": [
                  {
                    "fixed": "9190210606ffe52f92fdc75637f8ff69404f22c8"
                  }
                ],
                "source": "REFERENCES_COMMIT"
              },
              {
                "range": [
                  {
                    "fixed": "f47452533e1f28d847c63181b9d5f8b7243ef9a4"
                  }
                ],
                "source": "REFERENCES_COMMIT"
              },
              {
                "original_tag": "v8.0.5.2",
                "range": [
                  {
                    "fixed": "235c597b100321b6bd2d62f8df63707f42b25b2d"
                  }
                ],
                "source": "REFERENCES_TAG"
              },
              {
                "original_tag": "v8.1.4.1",
                "range": [
                  {
                    "fixed": "3f290b759c8e2ffe7c257951b1255740751355e4"
                  }
                ],
                "source": "REFERENCES_TAG"
              }
            ]
          },
          "events": [
            {
              "introduced": "1cdd190a25e483b65f1f25bbd0f13a25d696b461"
            },
            {
              "fixed": "3f290b759c8e2ffe7c257951b1255740751355e4"
            },
            {
              "introduced": "0"
            },
            {
              "fixed": "235c597b100321b6bd2d62f8df63707f42b25b2d"
            },
            {
              "fixed": "9190210606ffe52f92fdc75637f8ff69404f22c8"
            },
            {
              "fixed": "f47452533e1f28d847c63181b9d5f8b7243ef9a4"
            }
          ],
          "repo": "https://github.com/rails/rails",
          "type": "GIT"
        }
      ]
    }
  ],
  "aliases": [
    "GHSA-68p9-83h6-5wpj"
  ],
  "database_specific": {
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
      "CWE-79"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/126xxx/CVE-2026-126069.json"
  },
  "details": "Action View is a framework for handling view template lookup and rendering and provides view helpers for building HTML. Prior to 8.1.4.1 and 8.0.5.2, the fix for CVE-2026-33168 skips blank HTML attribute names in Action View tag helpers, but it tests the name before converting it to a string. A Symbol name made only of whitespace, such as :\" \", is not blank, because Symbol#blank? is Symbol#empty?, so it reaches the attribute escaping, which emits an attribute with no name and produces malformed HTML. The asset tag helpers, such as image_tag, video_tag and audio_tag, symbolize their options, so a whitespace String name passed to them takes the same path. A carefully crafted attribute value could then be misinterpreted by the browser as a separate attribute name, possibly leading to XSS. Applications that allow users to specify custom HTML attribute names are affected. This issue is fixed in versions 8.1.4.1 and 8.0.5.2.",
  "id": "CVE-2026-126069",
  "modified": "2026-11-12T02:30:42.664172463Z",
  "published": "2026-11-10T20:36:59.705Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/rails/rails/releases/tag/v8.0.5.2"
    },
    {
      "type": "WEB",
      "url": "https://github.com/rails/rails/releases/tag/v8.1.4.1"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/126xxx/CVE-2026-126069.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/rails/rails/security/advisories/GHSA-68p9-83h6-5wpj"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-126069"
    },
    {
      "type": "FIX",
      "url": "https://github.com/rails/rails/commit/9190210606ffe52f92fdc75637f8ff69404f22c8"
    },
    {
      "type": "FIX",
      "url": "https://github.com/rails/rails/commit/f47452533e1f28d847c63181b9d5f8b7243ef9a4"
    }
  ],
  "schema_version": "1.9.2",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:L/I:L/A:N",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Action View: Possible XSS vulnerability in Action View tag helpers"
}