CVE-2026-71849— Hono 信息泄露漏洞

Hono: Proxy Helper does not remove response headers listed in the `Connection` header

Hono is a Web application framework that provides support for any JavaScript runtime. From 4.7.0 to 4.12.33, the Proxy Helper proxy() function in hono/proxy does not remove response headers named by the origin's Connection header. Per RFC 9110 Section 7.6.1, an intermediary must remove the header fields listed in a message's Connection header field before forwarding the message, in addition to the well known hop by hop headers, but the proxy() function only removed the well known hop by hop headers, including Connection itself, from origin responses. A client may therefore receive response headers that the origin intended only for its immediate peer, disclosing connection scoped or internal metadata contained in such headers, when an application proxies responses from an origin that declares additional, non standard headers as hop by hop via the Connection response header. This issue is fixed in version 4.12.34.

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

信息暴露

Hono 信息泄露漏洞

Hono是Hono组织开源的一系列超小型Web应用框架。 Hono 4.7.0版本至4.12.33版本存在信息泄露漏洞，该漏洞源于Proxy Helper proxy()函数未移除源服务器Connection头中指定的响应头，可能导致客户端获取到源服务器仅用于直接对等方的响应头，从而泄露连接作用域或内部元数据。

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