CVE-2026-53624
Medium
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.
SeverityMedium
CVSS4.8
Exploit probability—
ProductFiber
PublishedJul 8, 2026
First seenJul 8, 2026
Weakness typeCWE-319CWE-319
How to fix
Update
- gofiber fiber3.4.0 or later
- github.com/gofiber/fiber3.4.0 or later
- github.com/gofiber/fiber/v33.4.0 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| gofiber fiber | v < 3.4.0 | 3.4.0 |
| github.com/gofiber/fiberGo | v < 3.4.0 | 3.4.0 |
| github.com/gofiber/fiber/v3Go | v < 3.4.0 | 3.4.0 |
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