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Medium · 4.3 CVE-2026-75601 EUVD-2026-66709

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

Published Aug 26, 2026 · Updated Aug 29, 2026 · Assigned by GitHub_M

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.

Affected products

VendorProductAffectedFixed
static-web-server static-web-server < 2.44.0 —

References