{"id":"CVE-2026-41067","sourceIdentifier":"security-advisories@github.com","published":"2026-04-24T17:16:21.083","lastModified":"2026-10-26T22:10:00.163","vulnStatus":"Analyzed","cveTags":[],"descriptions":[{"lang":"en","value":"Astro is a web framework. Prior to 6.1.6, the defineScriptVars function in Astro's server-side rendering pipeline uses a case-sensitive regex /<\\/script>/g to sanitize values injected into inline <script> tags via the define:vars directive. HTML parsers close <script> elements case-insensitively and also accept whitespace or / before the closing >, allowing an attacker to bypass the sanitization with payloads like </Script>, </script >, or </script/> and inject arbitrary HTML/JavaScript. This vulnerability is fixed in 6.1.6."},{"lang":"es","value":"Astro es un web framework. Antes de 6.1.6, la función defineScriptVars en el pipeline de renderizado del lado del servidor de Astro usa una expresión regular sensible a mayúsculas y minúsculas /<\\/script>/g para sanear valores inyectados en etiquetas [script_tag] en línea a través de la directiva define:vars. Los analizadores HTML cierran los elementos [script_tag] sin distinción entre mayúsculas y minúsculas y también aceptan espacios en blanco o / antes del cierre >, permitiendo a un atacante eludir la sanitización con payloads como [/Script], </script > o </script/> e inyectar HTML/JavaScript arbitrario. Esta vulnerabilidad está corregida en 6.1.6."}],"affected":[{"source":"security-advisories@github.com","affectedData":[{"vendor":"withastro","product":"astro","versions":[{"version":"< 6.1.6","status":"affected"}]}]}],"metrics":{"cvssMetricV31":[{"source":"security-advisories@github.com","type":"Secondary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N","baseScore":6.1,"baseSeverity":"MEDIUM","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"NONE","userInteraction":"REQUIRED","scope":"CHANGED","confidentialityImpact":"LOW","integrityImpact":"LOW","availabilityImpact":"NONE"},"exploitabilityScore":2.8,"impactScore":2.7}],"ssvcV203":[{"source":"134c704f-9b21-4f2e-91b3-4a467353bcc0","ssvcData":{"timestamp":"2026-04-24T17:27:06.343054Z","id":"CVE-2026-41067","options":[{"exploitation":"poc"},{"automatable":"no"},{"technicalImpact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}]},"weaknesses":[{"source":"security-advisories@github.com","type":"Secondary","description":[{"lang":"en","value":"CWE-79"}]}],"configurations":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:a:astro:astro:*:*:*:*:*:node.js:*:*","versionEndExcluding":"6.1.6","matchCriteriaId":"F1E12104-0666-4579-82D6-3805F521F36A"}]}]}],"references":[{"url":"https://github.com/withastro/astro/security/advisories/GHSA-j687-52p2-xcff","source":"security-advisories@github.com","tags":["Exploit","Mitigation","Vendor Advisory"]},{"url":"https://github.com/withastro/astro/security/advisories/GHSA-j687-52p2-xcff","source":"134c704f-9b21-4f2e-91b3-4a467353bcc0","tags":["Exploit","Mitigation","Vendor Advisory"]}]}