CVE-2026-47072— Hackney 安全漏洞

CRLF injection in WebSocket upgrade request in hackney

Improper Neutralization of CRLF Sequences ('CRLF Injection') vulnerability in benoitc hackney allows HTTP Request/Response Splitting. The WebSocket upgrade code in src/hackney_ws.erl copies the host, path, headers (ExtraHeaders), and protocols options from the caller-supplied opts map into the internal #ws_data{} record in init/1 and then splices them verbatim into the raw HTTP/1.1 upgrade request by binary concatenation in do_handshake/1. No CRLF or NUL stripping is performed at any of these four injection sites. An attacker who controls any of these options — for example by forwarding URL components or header values from untrusted input into hackney_ws:start_link/1 — can inject arbitrary HTTP headers into the outbound WebSocket upgrade request, leading to header injection, credential spoofing toward the upstream server, log and cache poisoning, or request smuggling via intermediary proxies. This issue affects hackney: from 2.0.0 before 4.0.1.

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对CRLF序列的转义处理不恰当(CRLF注入)

Hackney 安全漏洞

Hackney是Hackney公司的一个程序库。 hackney 2.0.0至4.0.1之前版本存在安全漏洞，该漏洞源于WebSocket升级代码中未对CRLF序列进行剥离，可能导致HTTP请求/响应拆分。

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