{"id":"CVE-2025-65019","sourceIdentifier":"security-advisories@github.com","published":"2025-11-19T17:15:53.063","lastModified":"2026-10-18T20:10:00.110","vulnStatus":"Analyzed","cveTags":[],"descriptions":[{"lang":"en","value":"Astro is a web framework. Prior to version 5.15.9, when using Astro's Cloudflare adapter (@astrojs/cloudflare) with output: 'server', the image optimization endpoint (/_image) contains a critical vulnerability in the isRemoteAllowed() function that unconditionally allows data: protocol URLs. This enables Cross-Site Scripting (XSS) attacks through malicious SVG payloads, bypassing domain restrictions and Content Security Policy protections. This issue has been patched in version 5.15.9."},{"lang":"es","value":"Astro es un web framework. Versiones anteriores a la versión 5.15.9, al usar el adaptador de Cloudflare de Astro (@astrojs/cloudflare) con output: 'server', el endpoint de optimización de imágenes (/_image) contiene una vulnerabilidad crítica en la función isRemoteAllowed() que permite incondicionalmente URLs con el protocolo data:. Esto permite ataques de Cross-Site Scripting (XSS) a través de cargas útiles SVG maliciosas, eludiendo las restricciones de dominio y las protecciones de la Política de Seguridad de Contenido. Este problema ha sido parcheado en la versión 5.15.9."}],"affected":[{"source":"security-advisories@github.com","affectedData":[{"vendor":"withastro","product":"astro","versions":[{"version":"< 5.15.9","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:U/C:L/I:L/A:N","baseScore":5.4,"baseSeverity":"MEDIUM","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"NONE","userInteraction":"REQUIRED","scope":"UNCHANGED","confidentialityImpact":"LOW","integrityImpact":"LOW","availabilityImpact":"NONE"},"exploitabilityScore":2.8,"impactScore":2.5},{"source":"nvd@nist.gov","type":"Primary","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":"2025-11-19T21:05:09.306723Z","id":"CVE-2025-65019","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":"5.15.9","matchCriteriaId":"30331D9E-36BD-4BF6-88C3-A8BE37A3E6C8"}]}]}],"references":[{"url":"https://github.com/withastro/astro/commit/9e9c528191b6f5e06db9daf6ad26b8f68016e533","source":"security-advisories@github.com","tags":["Patch"]},{"url":"https://github.com/withastro/astro/security/advisories/GHSA-fvmw-cj7j-j39q","source":"security-advisories@github.com","tags":["Exploit","Third Party Advisory"]}]}