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地图 / CVE-2026-86414: leaking host credentials to HTTP proxy

CVE-2026-86414: leaking host credentials to HTTP proxy

信息泄露 / Unlabeled / #3993566

厂商
curl
严重程度
低危
赏金
—
弱点
Unlabeled
研究员
@giant_anteater
披露日期
2026-10-14
资产
https://github.com/curl/curl
CVE
CVE-2026-86414

该报告还没有中文解读。

原文摘录

摘自原文(9815 字符中的一小部分)
I've found that found that an untrusted HTTP proxy can trick libcurl into sending the *origin's* credentials (Basic password, or a Negotiate/Kerberos ticket) to the proxy itself, by answering the `CONNECT` tunnel request with `401 WWW-Authenticate` instead of the expected `407 Proxy-Authenticate`. …
原文中的代码
// lib/http_proxy.c:491-501 (Curl_http_proxy_inspect_tunnel_response, H2/H3)
if(resp->status == 401) {
    auth_reply = Curl_dynhds_cget(&resp->headers, "WWW-Authenticate");
}
else if(resp->status == 407) {
    auth_reply = Curl_dynhds_cget(&resp->headers, "Proxy-Authenticate");
}

if(auth_reply) { …

默认不展示报告全文。以上为简短摘录,完整复现过程请阅读原文。版权归研究员与 curl 所有。

时间线

  • 报告提交
  • 公开披露
阅读 HackerOne 原文 ↗作者 @giant_anteater · 版权归作者与 curl 所有

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