CVE-2026-53624

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.

PUBLISHED Reserved 2026-06-09 | Published 2026-07-08 | Updated 2026-07-10 | Assigner GitHub_M

Problem types

CWE-319: Cleartext Transmission of Sensitive Information

Product status

References

github.com/.../fiber/security/advisories/GHSA-gv83-gqw6-9j2c exploit

github.com/.../fiber/security/advisories/GHSA-gv83-gqw6-9j2c

github.com/gofiber/fiber/pull/4389

github.com/...ommit/04dd4e7754f61768fddccacc79057e416f13e6bf

github.com/gofiber/fiber/releases/tag/v3.4.0

cve.org (CVE-2026-53624)

nvd.nist.gov (CVE-2026-53624)

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