CVE Watch28 oct 2026

CVE-2026-118660

Happy DOM is a JavaScript implementation of a web browser without its graphical user interface. Prior to 21.0.0, Happy DOM loads iframe src

CVSS

8.6

Alto

EPSS

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KEV

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Exploit Today

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0-100

Publicado: 28 oct 2026 · Última mod.: 28 oct 2026 · CWE-918

EPSS · 30d

Sin historial EPSS suficiente todavía.

Descripción técnica

Happy DOM is a JavaScript implementation of a web browser without its graphical user interface. Prior to 21.0.0, Happy DOM loads iframe src URLs and link rel="stylesheet" href URLs by default while parsing untrusted HTML on the server because disableIframePageLoading and disableCSSFileLoading default to false. An attacker who controls parsed HTML can therefore cause server-side requests to arbitrary internal or cloud endpoints without an application opt-in and may expose confidential responses or credentials returned by those endpoints. This issue is fixed in version 21.0.0.

Referencias oficiales

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