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CURLOPT_PROXYHEADER is not part of the HTTP-proxy connection reuse key: a second CONNECT-tunnel transfer silently reuses the first tunnel's Proxy-Auth

身份认证 / 认证缺陷(通用) / #4124549

厂商
curl
严重程度
低危
赏金
—
弱点
认证缺陷(通用)
研究员
@joumaaa
披露日期
2026-10-20
资产
https://github.com/curl/curl
CVE
CVE-2026-3784

该报告还没有中文解读。

原文摘录

摘自原文(6865 字符中的一小部分)
When libcurl tunnels through an HTTP proxy with `CONNECT` (HTTPS-over-proxy), the custom headers set via `CURLOPT_PROXYHEADER` are sent to the proxy **once, at tunnel-setup time** (`lib/http_proxy.c:63-83`). The connection-reuse decision for a proxied connection, however, does **not** take …
原文中的代码
/* lib/url.c:540-549 */
static bool proxy_info_matches(const struct proxy_info *data,
                               const struct proxy_info *needle)
{
  if((data->proxytype == needle->proxytype) &&
     Curl_peer_same_destination(data->peer, needle->peer) &&
     Curl_creds_same(data->creds, …

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

阅读 HackerOne 原文 ↗作者 @joumaaa · 版权归作者与 curl 所有

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