CVE-2026-44332 — Security Box Score

CVE · referencelatest edition

Reference page — cumulative record through Wednesday, August 19, 2026 UTC. Reference pages update as the archive grows; only dated daily editions are immutable pages of record.

CVE-2026-44332MEDIUM

gofiber fiber — Fiber: Username Enumeration via Timing Oracle in BasicAuth Default Authorizer

  AV  AC  PR  UI  S  C  I  A   CVSS    EPSS   %ile   KEV
   N   L   N   N  U  L  N  N    5.3   .0041   34.4     —

AFFECTED
  Product  Versions   Fixed
  fiber    < 3.3.0 –  —

TIMELINE
  May 5   Reserved by GitHub_M
  Jul 8   EXPLOIT PUBLISHED — CVE-2026-44332 (gofiber fiber). Public exploit reference added.
  Jul 8   Published (CNA: GitHub_M)

CWE-203 · CNA: GitHub_M · CVSS v3.1 · 4 references · NVD status: Analyzed

Description

Fiber is an Express inspired web framework written in Go. Prior to 3.3.0, the default Authorizer function in the BasicAuth middleware in middleware/basicauth/config.go uses short-circuit evaluation that skips password hash comparison for non-existent usernames, enabling reliable remote username enumeration through response timing differences. This issue is fixed in version 3.3.0.

Lifecycle

Complete event history — 3 events, chronological
Date	Event	Detail
May 5, 2026	Reserved	Reserved by GitHub_M
July 8, 2026	EXPLOIT PUBLISHED	EXPLOIT PUBLISHED — CVE-2026-44332 (gofiber fiber). Public exploit reference added.
July 8, 2026	Published	Published (CNA: GitHub_M)

Affected

Affected products and packages — 1 row
Vendor	Product / Package	Ecosystem	Version introduced	Fixed
gofiber	fiber	—	< 3.3.0	—

Weaknesses

CWE-203

References (4)

https://github.com/gofiber/fiber/commit/c7ac00edd19f9669b1aebbec6e229658baaa059e [Patch]
https://github.com/gofiber/fiber/pull/4245 [Issue Tracking, Patch]
https://github.com/gofiber/fiber/releases/tag/v3.3.0 [Release Notes]
https://github.com/gofiber/fiber/security/advisories/GHSA-g5vh-55hw-rxm8 [Exploit, Vendor Advisory]

Authoritative record: CVE-2026-44332 at cve.org

Vendors: gofiber

Weaknesses: CWE-203

About this page

This is a reference page, not a dated page of record. It assembles the complete lifecycle of CVE-2026-44332 from the CVE Program record, NVD enrichment, the CISA KEV catalog, EPSS, and OSV advisories. The box score's numbers (CVSS, EPSS, KEV status) are current as of Wednesday, August 19, 2026 UTC and are re-derived as the archive grows; only dated daily editions are immutable pages of record. The authoritative source for this identifier is cve.org.