CVE-2026-27480 (GCVE-0-2026-27480)
Vulnerability from cvelistv5
Published
2026-02-21 09:14
Modified
2026-02-24 18:13
CWE
  • CWE-204 - Observable Response Discrepancy
Summary
Static Web Server (SWS) is a production-ready web server suitable for static web files or assets. In versions 2.1.0 through 2.40.1, a timing-based username enumeration vulnerability in Basic Authentication allows attackers to identify valid users by exploiting early responses for invalid usernames, enabling targeted brute-force or credential-stuffing attacks. SWS checks whether a username exists before verifying the password, causing valid usernames to follow a slower code path (e.g., bcrypt hashing) while invalid usernames receive an immediate 401 response. This timing discrepancy allows attackers to enumerate valid accounts by measuring response-time differences. This issue has been fixed in version 2.41.0.
Impacted products
Vendor Product Version
static-web-server static-web-server Version: >= 2.1.0, < 2.41.0
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Show details on NVD website


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