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      <title>CVE-2026-49411 — Deno Node TCPWrap numeric hostname aliases bypass --deny-net resolved-IP deny checks</title>
      <link>https://cve.radiocsirt.org/vuln/cve-2026-49411</link>
      <description>&lt;p&gt;&lt;strong&gt;Affected:&lt;/strong&gt; denoland deno&lt;/p&gt;
&lt;p&gt;Deno is a JavaScript, TypeScript, and WebAssembly runtime. Prior to 2.8.0, the Node.js compatibility TCP path checked the permission against the original hostname string before resolution and then did not re-check after resolution. A caller could therefore pass a numeric alias of an IP address (for example the decimal integer 2130706433 or the hex form 0x7f000001, both of which resolve to 127.0.0.1) and reach the denied destination through node:net.connect or node:http.request&amp;#39;s { host, port } options form. This vulnerability is fixed in 2.8.0.&lt;/p&gt;</description>
      <content:encoded>&lt;p&gt;&lt;strong&gt;Affected:&lt;/strong&gt; denoland deno&lt;/p&gt;
&lt;p&gt;Deno is a JavaScript, TypeScript, and WebAssembly runtime. Prior to 2.8.0, the Node.js compatibility TCP path checked the permission against the original hostname string before resolution and then did not re-check after resolution. A caller could therefore pass a numeric alias of an IP address (for example the decimal integer 2130706433 or the hex form 0x7f000001, both of which resolve to 127.0.0.1) and reach the denied destination through node:net.connect or node:http.request&amp;#39;s { host, port } options form. This vulnerability is fixed in 2.8.0.&lt;/p&gt;</content:encoded>
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