{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-114128", "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "state": "PUBLISHED", "assignerShortName": "GitHub_M", "dateReserved": "2026-10-20T21:53:58.473Z", "datePublished": "2026-10-21T17:32:28.466Z", "dateUpdated": "2026-10-21T17:32:28.466Z"}, "containers": {"cna": {"title": "Astro: Reflected/Stored XSS via unescaped <script>/<style> tag content in JSX/MDX rendering", "problemTypes": [{"descriptions": [{"cweId": "CWE-79", "lang": "en", "description": "CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')", "type": "CWE"}]}], "metrics": [{"cvssV3_1": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 6.5, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N", "version": "3.1"}}], "references": [{"name": "https://github.com/withastro/astro/security/advisories/GHSA-98hj-9722-w3j8", "tags": ["x_refsource_CONFIRM"], "url": "https://github.com/withastro/astro/security/advisories/GHSA-98hj-9722-w3j8"}, {"name": "https://github.com/withastro/astro/pull/17896", "tags": ["x_refsource_MISC"], "url": "https://github.com/withastro/astro/pull/17896"}, {"name": "https://github.com/withastro/astro/commit/a548223607b9bb146d5d90ddda495343f9a2a739", "tags": ["x_refsource_MISC"], "url": "https://github.com/withastro/astro/commit/a548223607b9bb146d5d90ddda495343f9a2a739"}, {"name": "https://github.com/withastro/astro/releases/tag/astro@7.3.2", "tags": ["x_refsource_MISC"], "url": "https://github.com/withastro/astro/releases/tag/astro@7.3.2"}], "affected": [{"vendor": "withastro", "product": "astro", "versions": [{"version": "< 7.3.2", "status": "affected"}]}], "providerMetadata": {"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "shortName": "GitHub_M", "dateUpdated": "2026-10-21T17:32:28.466Z"}, "descriptions": [{"lang": "en", "value": "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."}], "source": {"advisory": "GHSA-98hj-9722-w3j8", "discovery": "UNKNOWN"}}}}

{}

{"affected": [{"affectedData": [{"product": "astro", "vendor": "withastro", "versions": [{"status": "affected", "version": "< 7.3.2"}]}], "source": "security-advisories@github.com"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "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", "lastModified": "2026-10-21T18:17:25.507", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 6.5, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N", "version": "3.1"}, "exploitabilityScore": 2.8, "impactScore": 3.6, "source": "security-advisories@github.com", "type": "Secondary"}]}, "published": "2026-10-21T18:17:25.507", "references": [{"source": "security-advisories@github.com", "url": "https://github.com/withastro/astro/commit/a548223607b9bb146d5d90ddda495343f9a2a739"}, {"source": "security-advisories@github.com", "url": "https://github.com/withastro/astro/pull/17896"}, {"source": "security-advisories@github.com", "url": "https://github.com/withastro/astro/releases/tag/astro@7.3.2"}, {"source": "security-advisories@github.com", "url": "https://github.com/withastro/astro/security/advisories/GHSA-98hj-9722-w3j8"}], "sourceIdentifier": "security-advisories@github.com", "vulnStatus": "Received", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-79"}], "source": "security-advisories@github.com", "type": "Primary"}]}

{}

{}