CVE-2026-78659: CVE-2026-78659: güvenlik açığı

Açıklama (NVD)

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.

Özet bilgiler

CVSS v3.1

7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

EPSS

%0,63 (yüzdelik 50)

CWE

CWE-405

Yama

Yok / bilinmiyor

Kaynaklar

• NVD kaydı
• go.dev
• go.dev
• go.dev
• groups.google.com
• groups.google.com
• pkg.go.dev
• CWE-405