CVE-2026-59727

{"id": "CVE-2026-59727", "cveTags": [], "metrics": {"ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-59727", "role": "CISA Coordinator", "options": [{"exploitation": "poc"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "version": "2.0.3", "timestamp": "2026-07-28T15:08:17.872331Z"}}], "cvssMetricV40": [{"type": "Secondary", "source": "security-advisories@github.com", "cvssData": {"Safety": "NOT_DEFINED", "version": "4.0", "Recovery": "NOT_DEFINED", "baseScore": 2.1, "Automatable": "NOT_DEFINED", "attackVector": "NETWORK", "baseSeverity": "LOW", "valueDensity": "NOT_DEFINED", "vectorString": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:A/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X", "exploitMaturity": "NOT_DEFINED", "providerUrgency": "NOT_DEFINED", "userInteraction": "ACTIVE", "attackComplexity": "LOW", "attackRequirements": "PRESENT", "privilegesRequired": "NONE", "subIntegrityImpact": "LOW", "vulnIntegrityImpact": "NONE", "integrityRequirement": "NOT_DEFINED", "modifiedAttackVector": "NOT_DEFINED", "subAvailabilityImpact": "NONE", "vulnAvailabilityImpact": "NONE", "availabilityRequirement": "NOT_DEFINED", "modifiedUserInteraction": "NOT_DEFINED", "modifiedAttackComplexity": "NOT_DEFINED", "subConfidentialityImpact": "LOW", "vulnConfidentialityImpact": "NONE", "confidentialityRequirement": "NOT_DEFINED", "modifiedAttackRequirements": "NOT_DEFINED", "modifiedPrivilegesRequired": "NOT_DEFINED", "modifiedSubIntegrityImpact": "NOT_DEFINED", "modifiedVulnIntegrityImpact": "NOT_DEFINED", "vulnerabilityResponseEffort": "NOT_DEFINED", "modifiedSubAvailabilityImpact": "NOT_DEFINED", "modifiedVulnAvailabilityImpact": "NOT_DEFINED", "modifiedSubConfidentialityImpact": "NOT_DEFINED", "modifiedVulnConfidentialityImpact": "NOT_DEFINED"}}]}, "affected": [{"source": "security-advisories@github.com", "affectedData": [{"vendor": "withastro", "product": "astro", "versions": [{"status": "affected", "version": ">= 3.10.0, < 7.0.4"}]}]}], "published": "2026-07-27T20:16:40.153", "references": [{"url": "https://github.com/withastro/astro/commit/7ba0bb1dc7516e88caff9abd7767322af44b0294", "source": "security-advisories@github.com"}, {"url": "https://github.com/withastro/astro/pull/17212", "source": "security-advisories@github.com"}, {"url": "https://github.com/withastro/astro/releases/tag/astro@7.0.4", "source": "security-advisories@github.com"}, {"url": "https://github.com/withastro/astro/security/advisories/GHSA-7pw4-f3q4-r2p2", "source": "security-advisories@github.com"}, {"url": "https://github.com/withastro/astro/security/advisories/GHSA-7pw4-f3q4-r2p2", "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0"}], "vulnStatus": "Deferred", "weaknesses": [{"type": "Secondary", "source": "security-advisories@github.com", "description": [{"lang": "en", "value": "CWE-79"}, {"lang": "en", "value": "CWE-83"}, {"lang": "en", "value": "CWE-116"}]}], "descriptions": [{"lang": "en", "value": "Astro is a web framework for content-driven websites. In versions 3.10.0 through 7.0.3, when a transition:persist, transition:scope, or transition:persist-props directive is applied to a client-hydrated (client:*) component, Astro copied the directive value onto the rendered <astro-island> element without HTML-escaping it. If a developer reflects attacker-controlled input into one of these directives, an attacker can break out of the attribute and inject arbitrary HTML/JavaScript into the server-rendered output, resulting in reflected cross-site scripting (XSS). Exploitation requires the application developer to have written a non-idiomatic pattern \u2014 passing untrusted, request-derived input directly into a transition directive. Astro applications that do not route untrusted input into these directives are unaffected. This issue has been fixed in version 7.0.4."}, {"lang": "es", "value": "Astro es un framework web para sitios web basados en contenido. En las versiones 3.10.0 a 7.0.3, cuando una directiva transition:persist, transition:scope o transition:persist-props se aplica a un componente hidratado por el cliente (client:*), Astro copiaba el valor de la directiva en el elemento [astro-island] renderizado sin escapar el HTML. Si un desarrollador refleja entrada controlada por el atacante en una de estas directivas, un atacante puede salir del atributo e inyectar HTML/JavaScript arbitrario en la salida renderizada por el servidor, lo que resulta en cross-site scripting (XSS) reflejado. La explotaci\u00f3n requiere que el desarrollador de la aplicaci\u00f3n haya escrito un patr\u00f3n no idiom\u00e1tico - pasando entrada no confiable, derivada de la solicitud, directamente a una directiva de transici\u00f3n. Las aplicaciones Astro que no dirigen entrada no confiable a estas directivas no se ven afectadas. Este problema ha sido solucionado en la versi\u00f3n 7.0.4."}], "lastModified": "2026-10-24T13:10:00.147", "sourceIdentifier": "security-advisories@github.com"}