CVE-2026-53624

EUVD-2026-42356
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.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
GitHub_MCNA
4.8 MEDIUM
NETWORK
HIGH
NONE
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N
Base Score
CVSS 3.x
EPSS Score
Percentile: Unknown
Early Detection
Affected products identified ahead of NVD analysis through intelligence sources.
VendorProductVersionSource
gofiberfiber
𝑥
< 3.4.0
CNA
Common Weakness Enumeration
References
https://github.com/gofiber/fiber/commit/04dd4e7754f61768fddccacc79057e416f13e6bf
https://github.com/gofiber/fiber/pull/4389
https://github.com/gofiber/fiber/releases/tag/v3.4.0
https://github.com/gofiber/fiber/security/advisories/GHSA-gv83-gqw6-9j2c