What is CVE-2026-27480?

CVE-2026-27480 is a medium-severity vulnerability in Static-web-server, classified under Observable Response Discrepancy. CVSS score: 5.3/10. Published 2026-02-21.

How severe is CVE-2026-27480?

Medium severity. CVSS v3 base score is 5.3 out of 10.

Vulnerability in Static-web-server

CVE-2026-27480

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 vali…

EPSS: 0.003 (26.8th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N.

Affected products

Static-web-server — versions >= 2.1.0, < 2.41.0
Static-web-server Static_web_server

Weakness classification (CWE)

CWE-204 — Observable Response Discrepancy

References

security-advisories@github.com (x_refsource_CONFIRM, Exploit, Vendor Advisory)
security-advisories@github.com (Patch, x_refsource_MISC)

Frequently asked questions

What is CVE-2026-27480?: CVE-2026-27480 is a medium-severity vulnerability in Static-web-server, classified under Observable Response Discrepancy. CVSS score: 5.3/10. Published 2026-02-21.
How severe is CVE-2026-27480?: Medium severity. CVSS v3 base score is 5.3 out of 10.