{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "extracted_events": [
              {
                "range": [
                  {
                    "introduced": "0"
                  },
                  {
                    "fixed": "7.3.2"
                  }
                ],
                "source": "AFFECTED_FIELD",
                "strategy": "StringRangeExpression"
              },
              {
                "range": [
                  {
                    "fixed": "a548223607b9bb146d5d90ddda495343f9a2a739"
                  }
                ],
                "source": "REFERENCES_COMMIT"
              },
              {
                "original_tag": "astro@7.3.2",
                "range": [
                  {
                    "fixed": "aa4949e425144e0d276d2ff70f01209e90fdfbe8"
                  }
                ],
                "source": "REFERENCES_TAG"
              }
            ]
          },
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "aa4949e425144e0d276d2ff70f01209e90fdfbe8"
            },
            {
              "fixed": "a548223607b9bb146d5d90ddda495343f9a2a739"
            }
          ],
          "repo": "https://github.com/withastro/astro",
          "type": "GIT"
        }
      ]
    }
  ],
  "aliases": [
    "GHSA-98hj-9722-w3j8"
  ],
  "database_specific": {
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
      "CWE-79"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/114xxx/CVE-2026-114128.json"
  },
  "details": "Astro is a web framework for content-driven websites. Prior to 7.3.2, Astro's JSX and MDX rendering pipeline treats string children of script and style elements as trusted HTML without distinguishing compiler-generated literal content from dynamic expression values. An application that passes attacker-controlled data directly as a dynamic child can allow a value containing a closing script or style tag to terminate the element and inject arbitrary HTML and JavaScript. Other JSX expression contexts escape dynamic strings automatically; the issue is limited to script and style children rendered through the astro:jsx renderer, including MDX components. Successful exploitation can produce reflected or stored cross-site scripting under the application's origin. This issue is fixed in 7.3.2.",
  "id": "CVE-2026-114128",
  "modified": "2026-10-22T02:30:43.211070623Z",
  "published": "2026-10-21T17:32:28.466Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/114xxx/CVE-2026-114128.json"
    },
    {
      "type": "FIX",
      "url": "https://github.com/withastro/astro/commit/a548223607b9bb146d5d90ddda495343f9a2a739"
    },
    {
      "type": "FIX",
      "url": "https://github.com/withastro/astro/pull/17896"
    },
    {
      "type": "WEB",
      "url": "https://github.com/withastro/astro/releases/tag/astro@7.3.2"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/withastro/astro/security/advisories/GHSA-98hj-9722-w3j8"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-114128"
    }
  ],
  "schema_version": "1.9.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Astro: Reflected/Stored XSS via unescaped \u003cscript\u003e/\u003cstyle\u003e tag content in JSX/MDX rendering"
}