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    <lastBuildDate>Wed, 07 Oct 2026 21:31:18 +0000</lastBuildDate>
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      <title>CVE-2026-44767 — Allowlist Bypass in setThemeRoot() Enables Cross-Origin CSS Injection</title>
      <link>https://cve.radiocsirt.org/vuln/cve-2026-44767</link>
      <description>&lt;p&gt;&lt;strong&gt;Affected:&lt;/strong&gt; SAP_SE @ui5/webcomponents-base&lt;/p&gt;
&lt;p&gt;setThemeRoot() failed to enforce the sap-allowed-theme-origins allowlist. An attacker-controlled absolute cross-origin URL could be stored and used directly to construct a &amp;lt;link rel=stylesheet&amp;gt; element, even when no &amp;lt;meta name=sap-allowed-theme-origins&amp;gt; tag was present in the document. The same bypass was reachable via the ?sap-themeRoot URL parameter.Exploitation requires attacker-influenced input (e.g., a URL query parameter, tenant configuration, or user-supplied setting) to reach setThemeRoot(). A successful exploit allows an attacker to inject arbitrary CSS into the victim page, enabling:- UI redressing and clickjacking- Phishing overlays- Visual defacement- Limited data exfiltration via CSS attribute selectors targeting predictable DOM content&lt;/p&gt;</description>
      <content:encoded>&lt;p&gt;&lt;strong&gt;Affected:&lt;/strong&gt; SAP_SE @ui5/webcomponents-base&lt;/p&gt;
&lt;p&gt;setThemeRoot() failed to enforce the sap-allowed-theme-origins allowlist. An attacker-controlled absolute cross-origin URL could be stored and used directly to construct a &amp;lt;link rel=stylesheet&amp;gt; element, even when no &amp;lt;meta name=sap-allowed-theme-origins&amp;gt; tag was present in the document. The same bypass was reachable via the ?sap-themeRoot URL parameter.Exploitation requires attacker-influenced input (e.g., a URL query parameter, tenant configuration, or user-supplied setting) to reach setThemeRoot(). A successful exploit allows an attacker to inject arbitrary CSS into the victim page, enabling:- UI redressing and clickjacking- Phishing overlays- Visual defacement- Limited data exfiltration via CSS attribute selectors targeting predictable DOM content&lt;/p&gt;</content:encoded>
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