VULNERABILITY INTELLIGENCE

CVE-2026-53624

CVSS score4.8 MEDIUM

EPSS probability0.21%

CISA KEVNot currently listed

Published2026-07-08

Last modified2026-10-25

Description

Fiber is an Express inspired web framework written in Go. Prior to 3.4.0, the helmet middleware in middleware/helmet/helmet.go never sets the Strict-Transport-Security response header even when HSTSMaxAge is configured because it checks c.Protocol() for https instead of c.Scheme(). This issue is fixed in version 3.4.0.