CVE-2026-53624

Summary

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.

Affected Software

Weaknesses

• CWE-319: CWE-319: Cleartext Transmission of Sensitive Information

References

• https://github.com/gofiber/fiber/security/advisories/GHSA-gv83-gqw6-9j2c
• https://github.com/gofiber/fiber/pull/4389
• https://github.com/gofiber/fiber/commit/04dd4e7754f61768fddccacc79057e416f13e6bf
• https://github.com/gofiber/fiber/releases/tag/v3.4.0

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