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地图 / CVE-2026-9546: sending old referer

CVE-2026-9546: sending old referer

内存破坏 / 释放后使用 / #3754343

厂商
curl
严重程度
低危
赏金
—
弱点
释放后使用
研究员
@fafawf
披露日期
2026-06-24
资产
https://github.com/curl/curl
CVE
CVE-2026-9546

该报告还没有中文解读。

原文摘录

摘自原文(17500 字符中的一小部分)
Summary: libcurl documents that `CURLOPT_REFERER` can be set to `NULL` to disable the Referer header again, but doing so after a transfer does not clear the cached per-handle referer state. As a result, the next HTTP request on the same easy handle can still send the previous request's `Referer:` …
原文中的代码
set -euo pipefail

ROOT="${ROOT:-$PWD}"
WORKDIR="$(mktemp -d "${TMPDIR:-/tmp}/curl-referer-uaf-inline-XXXXXX")"
BUILD_DIR="$WORKDIR/build-curl-asan"
SERVER_LOG="$WORKDIR/server.jsonl"
SERVER_ERR="$WORKDIR/server.err"
PORT_FILE="$WORKDIR/port"
CLIENT_C="$WORKDIR/referer_uaf_client.c" …

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 @fafawf · 版权归作者与 curl 所有

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