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      <title>CVE-2025-22870 — HTTP Proxy bypass using IPv6 Zone IDs in golang.org/x/net</title>
      <link>https://vulnerability.circl.lu/vuln/cve-2025-22870</link>
      <description>&lt;p&gt;&lt;strong&gt;Affected:&lt;/strong&gt; Go standard library net/http, golang.org/x/net/http/httpproxy, golang.org/x/net/proxy&lt;/p&gt;
&lt;p&gt;Matching of hosts against proxy patterns can improperly treat an IPv6 zone ID as a hostname component. For example, when the NO_PROXY environment variable is set to &amp;#34;*.example.com&amp;#34;, a request to &amp;#34;[::1%25.example.com]:80` will incorrectly match and not be proxied.&lt;/p&gt;</description>
      <content:encoded>&lt;p&gt;&lt;strong&gt;Affected:&lt;/strong&gt; Go standard library net/http, golang.org/x/net/http/httpproxy, golang.org/x/net/proxy&lt;/p&gt;
&lt;p&gt;Matching of hosts against proxy patterns can improperly treat an IPv6 zone ID as a hostname component. For example, when the NO_PROXY environment variable is set to &amp;#34;*.example.com&amp;#34;, a request to &amp;#34;[::1%25.example.com]:80` will incorrectly match and not be proxied.&lt;/p&gt;</content:encoded>
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