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CVE-2026-78659HTTP/2 server memory exhaustion due to Trailer headers in net/http

Go standard library net/http; Go standard library net/http/internal/http2; golang.org/x/net golang.org/x/net/http2 Yayım: (1 ay önce)

Açıklama

When "Trailer" 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 "Trailer" 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.

Zayıflık türü (CWE): CWE-405

Veri: CVE.org, NVD, CISA KEV, FIRST EPSS, Ubuntu. Bilgiler kaynaktaki haliyle, İngilizce yayımlanır.

Etkilenen ürünler ve sürümler

ÜreticiÜrünSürümler
Go standard library net/http < 1.26.9
Go standard library net/http/internal/http2 1.27.0-0 – < 1.27.2
golang.org/x/net golang.org/x/net/http2 < 0.60.0

Kaynaklar ve yamalar

Aynı üründe son açıklar — Go

Puansız
CVE-2026-97054

HTTP/1 server crash due to MaxBytesReader header race in net/http

Go standard library net/http

For HTTP/1 servers, when MaxBytesReader's limit is exceeded, "Connection: close" header is automatically set without synchronization, which might race with another header being set explicitly in the server handler. As a result, an HTTP/1 server that utilizes …