https://vulnerability.circl.lu Contains only the most 10 recent entries. http://www.rssboard.org/rss-specification python-feedgen en Fri, 09 Oct 2026 22:43:33 +0000 https://vulnerability.circl.lu/vuln/cve-2026-78659 <p><strong>Affected:</strong> Go standard library net/http, Go standard library net/http/internal/http2, golang.org/x/net/http2</p> <p>When &#34;Trailer&#34; headers are sent by a client, the HTTP server internally uses the header values to populate the Request.Trailer map passed to the server handler. Because Request.Trailer is a map, each entry incurs memory overhead. For HTTP/2 servers, a malicious client can exploit this by sending a &#34;Trailer&#34; header that declares a large number of fields, causing the server to allocate a disproportionate amount of memory while bypassing Server.MaxHeaderValueCount and Server.MaxHeaderBytes limits. This exploit is not applicable for HTTP/1 servers, which do not support multiplexing a large number of requests over one TCP connection, and whose Server.MaxHeaderBytes are calculated differently.</p> <p><strong>Affected:</strong> Go standard library net/http, Go standard library net/http/internal/http2, golang.org/x/net/http2</p> <p>When &#34;Trailer&#34; headers are sent by a client, the HTTP server internally uses the header values to populate the Request.Trailer map passed to the server handler. Because Request.Trailer is a map, each entry incurs memory overhead. For HTTP/2 servers, a malicious client can exploit this by sending a &#34;Trailer&#34; header that declares a large number of fields, causing the server to allocate a disproportionate amount of memory while bypassing Server.MaxHeaderValueCount and Server.MaxHeaderBytes limits. This exploit is not applicable for HTTP/1 servers, which do not support multiplexing a large number of requests over one TCP connection, and whose Server.MaxHeaderBytes are calculated differently.</p> https://vulnerability.circl.lu/vuln/cve-2026-78659