CVE-2026-112712— fastify/middie 中间件路径作用域绕过漏洞
一分钟漏洞结论
影响对象
@fastify/middie @fastify/middie
利用判断
尚无明确在野利用证据，仍需结合暴露面评估
建议动作
优先检查厂商安全公告和参考链接中的修复版本；无法立即升级时，限制受影响服务暴露并加强监测。
是 Fastify 的类 Express 中间件引擎。在 9.0.0 至 9.3.5 版本中， 函数将路径作用域中间件的挂载路径与插件作用域前缀拼接时，其结果可能与 Fastify 路由器实际处理的路径不一致。这种情况最常见于作用域前缀以斜杠结尾时，同时也可能出现在使用数组形式的挂载路径，或挂载路径未以斜杠开头的情形中。当这两条路径不一致时，中间件会被静默跳过，而路由处理器仍会正常执行，导致认证、授权或速率限制等路径作用域中间件可通过单次未认证请求被绕过。该问题已在 9.3.6 版本中修复，建议用户升级至 9.3.
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一、 漏洞 CVE-2026-112712 基础信息
漏洞信息
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Vulnerability Title
@fastify/middie vulnerable to path-scoped middleware bypass via scope prefix mismatch
来源: CVE Program / CVE List V5
Vulnerability Description
@fastify/middie is the Express-style middleware engine for Fastify. In versions from 9.0.0 through 9.3.5, the use() function joined a path-scoped middleware's mount path to the plugin scope prefix in a way that could diverge from the path Fastify's router serves, most often when the scope prefix ended in a slash, and also for array mount paths and for mount paths written without a leading slash. When the two paths disagreed, the middleware was silently skipped while the route handler still ran, so path-scoped middleware such as authentication, authorization, or rate limiting could be bypassed by a single unauthenticated request. The issue is fixed in @fastify/middie 9.3.6, and users should upgrade to 9.3.6 or later. As a workaround, enforce authorization in a Fastify hook such as preHandler that runs after the router has resolved the request.
来源: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
来源: CVE Program / CVE List V5
Vulnerability Type
解释冲突
来源: CVE Program / CVE List V5
受影响产品
| 厂商 | 产品 | 影响版本 | CPE | 订阅 |
|---|---|---|---|---|
| @fastify/middie | @fastify/middie | 9.0.0 ~ 9.3.6 | - |
|
二、漏洞 CVE-2026-112712 的公开POC
| # | POC 描述 | 源链接 | 神龙链接 |
|---|
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CVE-2026-112712 厂商安全公告 (1)
IV. Related Vulnerabilities
V. Comments for CVE-2026-112712
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