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    <title>Most recent entries from all</title>
    <link>https://vulnerability.circl.lu</link>
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      <title>CVE-2026-39825 — ReverseProxy forwards queries with more than urlmaxqueryparams parameters in net/http/httputil</title>
      <link>https://vulnerability.circl.lu/vuln/cve-2026-39825</link>
      <description>&lt;p&gt;&lt;strong&gt;Affected:&lt;/strong&gt; Go standard library net/http/httputil&lt;/p&gt;
&lt;p&gt;ReverseProxy can forward queries containing parameters not visible to Rewrite functions. When used with a Rewrite function, or a Director function which parses query parameters, ReverseProxy sanitizes the forwarded request to remove query parameters which are not parsed by url.ParseQuery. ReverseProxy does not take ParseQuery&amp;#39;s limit on the total number of query parameters (controlled by GODEBUG=urlmaxqueryparams=N) into account. This can permit ReverseProxy to forward a request containing a query parameter that is not visible to the Rewrite function. For example, the query &amp;#34;a1=x&amp;amp;a2=x&amp;amp;...&amp;amp;a10000=x&amp;amp;hidden=y&amp;#34; can forward the parameter &amp;#34;hidden=y&amp;#34; while hiding it from the proxy&amp;#39;s Rewrite function.&lt;/p&gt;</description>
      <content:encoded>&lt;p&gt;&lt;strong&gt;Affected:&lt;/strong&gt; Go standard library net/http/httputil&lt;/p&gt;
&lt;p&gt;ReverseProxy can forward queries containing parameters not visible to Rewrite functions. When used with a Rewrite function, or a Director function which parses query parameters, ReverseProxy sanitizes the forwarded request to remove query parameters which are not parsed by url.ParseQuery. ReverseProxy does not take ParseQuery&amp;#39;s limit on the total number of query parameters (controlled by GODEBUG=urlmaxqueryparams=N) into account. This can permit ReverseProxy to forward a request containing a query parameter that is not visible to the Rewrite function. For example, the query &amp;#34;a1=x&amp;amp;a2=x&amp;amp;...&amp;amp;a10000=x&amp;amp;hidden=y&amp;#34; can forward the parameter &amp;#34;hidden=y&amp;#34; while hiding it from the proxy&amp;#39;s Rewrite function.&lt;/p&gt;</content:encoded>
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