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    <lastBuildDate>Wed, 07 Oct 2026 10:30:11 +0000</lastBuildDate>
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      <title>CVE-2026-65899 — DOMPurify before 3.4.9 Trusted Types Policy State Contamination</title>
      <link>https://cve.radiocsirt.org/vuln/cve-2026-65899</link>
      <description>&lt;p&gt;&lt;strong&gt;Affected:&lt;/strong&gt; cure53 DOMPurify&lt;/p&gt;
&lt;p&gt;DOMPurify 3.0.0 before 3.4.9 does not reset the retained Trusted Types policy when clearConfig() is called, so a DOMPurify instance reused across trust boundaries stays bound to a previously supplied TRUSTED_TYPES_POLICY. A later caller that requests RETURN_TRUSTED_TYPE output receives a TrustedHTML object created by the old (potentially unsafe) policy rather than a clean default, which can lead to script execution at a Trusted Types sink. Passing TRUSTED_TYPES_POLICY: null on the later call also does not clear the retained policy.&lt;/p&gt;</description>
      <content:encoded>&lt;p&gt;&lt;strong&gt;Affected:&lt;/strong&gt; cure53 DOMPurify&lt;/p&gt;
&lt;p&gt;DOMPurify 3.0.0 before 3.4.9 does not reset the retained Trusted Types policy when clearConfig() is called, so a DOMPurify instance reused across trust boundaries stays bound to a previously supplied TRUSTED_TYPES_POLICY. A later caller that requests RETURN_TRUSTED_TYPE output receives a TrustedHTML object created by the old (potentially unsafe) policy rather than a clean default, which can lead to script execution at a Trusted Types sink. Passing TRUSTED_TYPES_POLICY: null on the later call also does not clear the retained policy.&lt;/p&gt;</content:encoded>
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