CVE-2026-109829— undici 缓存投毒和跨用户披露漏洞
一分钟漏洞结论
影响对象
undici undici
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。
undici 是 Node.js 的 HTTP 客户端库。在 7.0.0 至 7.30.0 版本以及 8.0.0 至 8.12.1 版本中，当使用无源（originless）Agent 并按“重定向拦截器优先、缓存拦截器后续”的顺序组合拦截器，且共享一个缓存存储时，缓存会根据重定向处理器更改目标源之前原始请求的 URL 来生成其缓存键。因此，经过跨源重定向后产生的响应会被错误地缓存在该原始 URL 对应的键名下。 如果攻击者能够控制从可信 URL 发起的重定向目标，他们即可将自己的响应缓存到该可信 URL 名下，并
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一、 漏洞 CVE-2026-109829 基础信息
漏洞信息
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Vulnerability Title
undici vulnerable to cache poisoning and cross-user disclosure via cross-origin redirects
来源: CVE Program / CVE List V5
Vulnerability Description
undici is an HTTP client library for Node.js. In versions 7.0.0 through 7.30.0 and 8.0.0 through 8.12.1, when an originless Agent composes the redirect and cache interceptors in that order with a shared cache store, the cache builds its key from the original request URL before the redirect handler changes the origin, so a response produced after a cross-origin redirect is stored under the original key. An attacker who controls the target of a redirect from a trusted URL can have their response cached under that trusted URL and served to later callers, allowing persistent cache poisoning, and the same key confusion lets a private, non-stored redirect response to a user-specific resource be stored under the original URL and served to a later unauthenticated caller, disclosing private data. Applications are affected only when an originless Agent, a shared cache store, and the redirect-then-cache composition are all used. The issue is fixed in undici 7.30.1 and 8.12.2, which verify the producing origin still matches the cache key and preserve each redirect hop's cache-control policy before storing, and users should upgrade to one of those versions or later. As a workaround, compose the cache interceptor before the redirect interceptor, use per-origin dispatchers and cache stores, or disable shared caching on redirect-capable requests.
来源: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
来源: CVE Program / CVE List V5
Vulnerability Type
源验证错误
来源: CVE Program / CVE List V5
受影响产品
二、漏洞 CVE-2026-109829 的公开POC
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CVE-2026-109829 其他参考 (1)
同批安全公告 · undici · 2026-10-15 · 共 9 条
| CVE-2026-109855 | 7.5 HIGH | undici WebSocket 客户端拒绝服务漏洞 |
| CVE-2026-87018 | 7.5 HIGH | undici 拒绝服务漏洞（TLS 1.2 证书变更重协商） |
| CVE-2026-109869 | 7.5 HIGH | undici 拒绝服务漏洞 |
| CVE-2026-109383 | 7.4 HIGH | undici TLS证书验证绕过漏洞 |
| CVE-2026-87029 | 5.9 MEDIUM | undici 拒绝服务漏洞：解压缩拦截器未处理异常 |
| CVE-2026-109932 | 5.9 MEDIUM | undici WebSocket 客户端拒绝服务漏洞 |
| CVE-2026-109841 | 5.9 MEDIUM | undici 子资源完整性绕过漏洞 |
| CVE-2026-109924 | 5.9 MEDIUM | undici EventSource解析器拒绝服务漏洞 |
IV. Related Vulnerabilities
V. Comments for CVE-2026-109829
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