CVE-2026-48710— Starlette 环境问题漏洞
公开利用映射 1
Nuclei · 1 CVE-2026-48710.yaml [template]
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一、 漏洞 CVE-2026-48710 基础信息
漏洞信息
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Vulnerability Title
Starlette has missing Host header validation that poisons request.url.path, bypassing path-based security checks
来源: CVE Program / CVE List V5
Vulnerability Description
Starlette is a lightweight ASGI framework/toolkit. Prior to version 1.0.1, the HTTP `Host` request header was not validated before being used to reconstruct `request.url`. Because the routing algorithm relies on the raw HTTP path while `request.url` is rebuilt from the `Host` header, a malformed header could make `request.url.path` differ from the path that was actually requested. Middleware and endpoints that apply security restrictions based on `request.url` (rather than the raw `scope` path) could therefore be bypassed. Users should upgrade to a version greater than or equal to version 1.0.1, which validates the `Host` header against the grammar of RFC 9112 §3.2 / RFC 3986 §3.2.2 when constructing `request.url` and falls back to `scope["server"]` for malformed values.
来源: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
来源: CVE Program / CVE List V5
Vulnerability Type
HTTP请求的解释不一致性(HTTP请求私运)
来源: CVE Program / CVE List V5
Vulnerability Title
Starlette 环境问题漏洞
来源: 中国国家信息安全漏洞库 CNNVD
Vulnerability Description
Starlette是Encode开源的一个轻量级的 ASGI 框架/工具包。非常适合用 Python 构建异步 web 服务。 Starlette 1.0.1之前版本存在环境问题漏洞，该漏洞源于未验证HTTP Host请求头，导致基于request.url的安全限制可能被绕过。
来源: 中国国家信息安全漏洞库 CNNVD
CVSS Information
N/A
来源: 中国国家信息安全漏洞库 CNNVD
Vulnerability Type
N/A
来源: 中国国家信息安全漏洞库 CNNVD
受影响产品
二、漏洞 CVE-2026-48710 的公开POC
| # | POC 描述 | 源链接 | 神龙链接 |
|---|---|---|---|
| 1 | A flaw was found in Starlette, a lightweight ASGI (Asynchronous Server Gateway Interface) framework. A remote attacker could exploit this vulnerability by sending a specially crafted HTTP Host request header. This malformed header could cause the request.url to be incorrectly reconstructed, leading to a discrepancy with the actual requested path. Consequently, security restrictions enforced by middleware and endpoints that rely on request.url for validation could be bypassed, potentially allowing unauthorized access or actions. | https://github.com/projectdiscovery/nuclei-templates/blob/main/http/cves/2026/CVE-2026-48710.yaml | POC详情 |
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成功标志:
VULNERABLE: HTTP/1.1 200 OK ; body exfiltrated protected secret PROOF_beb0ada5b3193a74 via Host-header path poisoning (baseline was HTTP/1.1 403 Forbidden)claude_code · 3763 chars
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三、漏洞 CVE-2026-48710 的情报信息
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CVE-2026-48710 补丁与修复 (1)
CVE-2026-48710 厂商安全公告 (4)
CVE-2026-48710 安全博客文章 (1)
CVE-2026-48710 新闻报道 (1)
IV. Related Vulnerabilities
V. Comments for CVE-2026-48710
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