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      <title>CVE-2026-118660 — Happy DOM: SSRF via iframe and link stylesheet when parsing untrusted HTML</title>
      <link>https://db.gcve.eu/vuln/cve-2026-118660</link>
      <description>&lt;p&gt;&lt;strong&gt;Affected:&lt;/strong&gt; capricorn86 happy-dom&lt;/p&gt;
&lt;p&gt;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=&amp;#34;stylesheet&amp;#34; 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.&lt;/p&gt;</description>
      <content:encoded>&lt;p&gt;&lt;strong&gt;Affected:&lt;/strong&gt; capricorn86 happy-dom&lt;/p&gt;
&lt;p&gt;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=&amp;#34;stylesheet&amp;#34; 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.&lt;/p&gt;</content:encoded>
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