CVE-2025-65026

{"id": "CVE-2025-65026", "cveTags": [], "metrics": {"ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2025-65026", "role": "CISA Coordinator", "options": [{"exploitation": "poc"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "version": "2.0.3", "timestamp": "2025-11-20T14:19:05.465613Z"}}], "cvssMetricV31": [{"type": "Secondary", "source": "security-advisories@github.com", "cvssData": {"scope": "CHANGED", "version": "3.1", "baseScore": 6.1, "attackVector": "NETWORK", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N", "integrityImpact": "LOW", "userInteraction": "REQUIRED", "attackComplexity": "LOW", "availabilityImpact": "NONE", "privilegesRequired": "NONE", "confidentialityImpact": "LOW"}, "impactScore": 2.7, "exploitabilityScore": 2.8}, {"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"scope": "CHANGED", "version": "3.1", "baseScore": 9.6, "attackVector": "NETWORK", "baseSeverity": "CRITICAL", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H", "integrityImpact": "HIGH", "userInteraction": "REQUIRED", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "NONE", "confidentialityImpact": "HIGH"}, "impactScore": 6.0, "exploitabilityScore": 2.8}]}, "affected": [{"source": "security-advisories@github.com", "affectedData": [{"vendor": "esm-dev", "product": "esm.sh", "versions": [{"status": "affected", "version": "< 136"}]}]}], "published": "2025-11-19T18:15:50.023", "references": [{"url": "https://github.com/esm-dev/esm.sh/commit/87d2f6497574bf4448641a5527a3ac2beba5fd6c", "tags": ["Patch"], "source": "security-advisories@github.com"}, {"url": "https://github.com/esm-dev/esm.sh/security/advisories/GHSA-hcpf-qv9m-vfgp", "tags": ["Exploit", "Vendor Advisory"], "source": "security-advisories@github.com"}, {"url": "https://github.com/esm-dev/esm.sh/security/advisories/GHSA-hcpf-qv9m-vfgp", "tags": ["Exploit", "Vendor Advisory"], "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Secondary", "source": "security-advisories@github.com", "description": [{"lang": "en", "value": "CWE-94"}]}, {"type": "Primary", "source": "nvd@nist.gov", "description": [{"lang": "en", "value": "CWE-79"}]}], "descriptions": [{"lang": "en", "value": "esm.sh is a nobuild content delivery network(CDN) for modern web development. Prior to version 136, The esm.sh CDN service contains a Template Literal Injection vulnerability (CWE-94) in its CSS-to-JavaScript module conversion feature. When a CSS file is requested with the ?module query parameter, esm.sh converts it to a JavaScript module by embedding the CSS content directly into a template literal without proper sanitization. An attacker can inject malicious JavaScript code using ${...} expressions within CSS files, which will execute when the module is imported by victim applications. This enables Cross-Site Scripting (XSS) in browsers and Remote Code Execution (RCE) in Electron applications. This issue has been patched in version 136."}, {"lang": "es", "value": "esm.sh es una red de entrega de contenido (CDN) sin compilaci\u00f3n para el desarrollo web moderno. Versiones anteriores a la versi\u00f3n 136, el servicio CDN de esm.sh contiene una vulnerabilidad de inyecci\u00f3n de literales de plantilla (CWE-94) en su funci\u00f3n de conversi\u00f3n de m\u00f3dulos CSS a JavaScript. Cuando se solicita un archivo CSS con el par\u00e1metro de consulta ?module, esm.sh lo convierte en un m\u00f3dulo JavaScript incrustando el contenido CSS directamente en un literal de plantilla sin la sanitizaci\u00f3n adecuada. Un atacante puede inyectar c\u00f3digo JavaScript malicioso utilizando expresiones ${...} dentro de archivos CSS, que se ejecutar\u00e1 cuando el m\u00f3dulo sea importado por las aplicaciones de la v\u00edctima. Esto permite Cross-Site Scripting (XSS) en navegadores y Ejecuci\u00f3n Remota de C\u00f3digo (RCE) en aplicaciones Electron. Este problema ha sido parcheado en la versi\u00f3n 136."}], "lastModified": "2026-10-18T20:10:00.110", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:esm:esm.sh:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "6FB0321A-8476-4667-8F8F-BF9D9E1DF466", "versionEndExcluding": "136"}], "operator": "OR"}]}], "sourceIdentifier": "security-advisories@github.com"}