Fiber: HSTS header never set in helmet middleware due to incorrect protocol check

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.

Scores

EPSS (exploitation in 30 days)

0.21% · top 88% of all CVEs (6 Nov 2026)

CISA SSVC

Exploitation: poc · Automatable: no · Technical impact: partial

The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 4.8.

Weakness

• CWE-319: Cleartext Transmission of Sensitive Information (opens in a new tab)All about CWE-319 and its CVEs

Affected products

• gofiber · fiber

  • affected < 3.4.0

Affected packages

From reviewed advisories of the GitHub Advisory Database.

• Gogithub.com/gofiber/fiberGHSA-gv83-gqw6-9j2c (opens in a new tab)

References (4)

• https://github.com/gofiber/fiber/security/advisories/GHSA-gv83-gqw6-9j2c (opens in a new tab)x_refsource_CONFIRMexploit
• https://github.com/gofiber/fiber/pull/4389 (opens in a new tab)x_refsource_MISC
• https://github.com/gofiber/fiber/commit/04dd4e7754f61768fddccacc79057e416f13e6bf (opens in a new tab)x_refsource_MISC
• https://github.com/gofiber/fiber/releases/tag/v3.4.0 (opens in a new tab)x_refsource_MISC

Sources

The same CVE in the primary databases and aggregators, to check against.

• CVE.org record (opens in a new tab)
• CVE List JSON (GitHub) (opens in a new tab)
• NVD (opens in a new tab)
• FIRST EPSS (opens in a new tab)
• OSV.dev (opens in a new tab)
• GitHub Advisory GHSA-gv83-gqw6-9j2c (opens in a new tab)
• CIRCL Vulnerability-Lookup (opens in a new tab)

Badge for a README or a ticket

[![CVE-2026-53624](https://trackcve.app/badge/CVE-2026-53624.svg)](https://trackcve.app/cve/CVE-2026-53624)

Record last updated 10 Jul 2026, 14:57 UTC.