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    <lastBuildDate>Wed, 30 Sep 2026 08:27:13 +0000</lastBuildDate>
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      <title>CVE-2025-47279 — undici Denial of Service attack via bad certificate data</title>
      <link>https://vulnerability.circl.lu/vuln/cve-2025-47279</link>
      <description>&lt;p&gt;&lt;strong&gt;Affected:&lt;/strong&gt; nodejs undici&lt;/p&gt;
&lt;p&gt;Undici is an HTTP/1.1 client for Node.js. Prior to versions 5.29.0, 6.21.2, and 7.5.0, applications that use undici to implement a webhook-like system are vulnerable. If the attacker set up a server with an invalid certificate, and they can force the application to call the webhook repeatedly, then they can cause a memory leak. This has been patched in versions 5.29.0, 6.21.2, and 7.5.0. As a workaound, avoid calling a webhook repeatedly if the webhook fails.&lt;/p&gt;</description>
      <content:encoded>&lt;p&gt;&lt;strong&gt;Affected:&lt;/strong&gt; nodejs undici&lt;/p&gt;
&lt;p&gt;Undici is an HTTP/1.1 client for Node.js. Prior to versions 5.29.0, 6.21.2, and 7.5.0, applications that use undici to implement a webhook-like system are vulnerable. If the attacker set up a server with an invalid certificate, and they can force the application to call the webhook repeatedly, then they can cause a memory leak. This has been patched in versions 5.29.0, 6.21.2, and 7.5.0. As a workaound, avoid calling a webhook repeatedly if the webhook fails.&lt;/p&gt;</content:encoded>
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