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CVE-2026-75601— Static Web Server: Authentication bypass on /metrics endpoint when --basic-auth is enabled

Quick assessment

Affected
static-web-server static-web-server
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

静态 Web 服务器（Static Web Server，简称 SWS）是一款面向静态网页文件或静态资源的、可投入生产环境使用的 Web 服务器。在 2.43.0 及之前版本中，若同时启用了基本认证（basic-auth）和监控指标（metrics）功能， 端点的处理逻辑位于基本认证检查之前（见 ）。这使得未认证的远程攻击者能够访问 端点，获取 Prometheus 监控指标，从而泄露以下信息：虚拟主机名、请求量、错误率、延迟分布以及活动连接数。该问题已在 2.44.0 版本中修复。

CVSS 4.3 · Medium
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I. Basic Information for CVE-2026-75601

Vulnerability Information
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Vulnerability Title
Static Web Server: Authentication bypass on /metrics endpoint when --basic-auth is enabled
Source: CVE Program / CVE List V5
Vulnerability Description
Static Web Server (SWS) is a production-ready web server suitable for static web files or assets. Through 2.43.0, instances with both basic-auth and metrics features enabled process the /metrics endpoint before the basic-auth check in src/handler.rs, allowing an unauthenticated remote attacker to retrieve Prometheus metrics that disclose virtual host names, request volumes, error rates, latency distributions, and active connections. This issue is fixed in version 2.44.0.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
关键功能的认证机制缺失
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
static-web-server static-web-server < 2.44.0 -

II. Public POCs for CVE-2026-75601

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III. Intelligence Information for CVE-2026-75601

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Patches & Fixes for CVE-2026-75601 (1)

Vendor Advisories for CVE-2026-75601 (1)

IV. Related Vulnerabilities

Same product: static-web-server
Same vendor: static-web-server
Same weakness: CWE-306

V. Comments for CVE-2026-75601

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