CVE-2026-54387 漏洞深度分析

漏洞概述

CVE 编号: CVE-2026-54387
CVSS 评分: 9.3(CRITICAL)
CVSS 向量: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
CWE 分类: CWE-444
漏洞状态: Deferred
发布时间: 2026-06-17T20:17:27.480
最后更新: 2026-07-14T22:17:16.293

漏洞描述

Tinyproxy through 1.11.3, fixed in commit ff45d3b, fails to reconcile conflicting Content-Length and Transfer-Encoding: chunked headers, forwarding both verbatim to the backend while using Content-Length to determine how many request body bytes to consume. Remote attackers can desynchronize the proxy and backend parser state, allowing injection of arbitrary HTTP requests to the backend to enable cache poisoning, access control bypass, and request hijacking.

影响分析

此漏洞的具体影响取决于实际利用场景。"

修复建议

  1. 及时关注厂商发布的安全更新和补丁
  2. 升级受影响组件到最新版本
  3. 如无法立即升级,参考厂商提供的临时缓解措施
  4. 加强网络访问控制和监控

参考链接

  1. https://github.com/tinyproxy/tinyproxy/commit/ff45d3bf0e61d0f8ed97ab379d3047f04eb67521
  2. https://github.com/tinyproxy/tinyproxy/issues/609
  3. https://github.com/tinyproxy/tinyproxy/pull/610
  4. https://www.vulncheck.com/advisories/tinyproxy-http-request-smuggling-via-cl-te-desynchronization