CVE-2025-65026: fallo de gravedad media en esm-dev esm.sh
esm.sh CDN service has JS Template Literal Injection in CSS-to-JavaScript
Publicada el · Actualizada el
Aviso por correo cuando entre en el KEV, tenga PoC pública o suba de nota.
13Vexday Risk Score
Sin señal de explotación. Ningún artefacto público de explotación conocido hasta ahora.
ssvc Trackcvss 6.1epss 0.5%
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.
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Productos afectados
esm-dev · esm.shCVEs relacionadas — esm-dev esm.sh
En el mismo producto, de las más peligrosas a las menos.
CVE-2025-59342MEDIUMesm.sh writes arbitrary files via path traversal in `X-Zone-Id` headerEPSS 3.2%CVE-2025-59341HIGHLocal File Inclusion in esm.shEPSS 1.6%CVE-2026-102657HIGHesm.sh: web.NewHandler allows arbitrary file read via encoded dot-segment path traversalEPSS 0.7%CVE-2025-65025HIGHesm.sh CDN service has arbitrary file write via tarslipEPSS 0.6%CVE-2026-23644HIGHesm.sh has path traversal in `extractPackageTarball` that enables file writes from malicious packagesEPSS 0.6%CVE-2026-44593HIGHesm.sh: Legacy Route Path Traversal Can Lead to RCEEPSS 0.4%