golang-github-gofiber-fiber — security advisory

{
  "id": "cfc7ae6f70c59a63e4706b6b1fbc97a55e49d5c5549efae21562233275853c9f",
  "url": "https://osv.dev/vulnerability/UBUNTU-CVE-2026-44332",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "UBUNTU-CVE-2026-44332",
    "summary": "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.",
    "evidence": "osv:UBUNTU-CVE-2026-44332",
    "products": [
      {
        "name": {
          "value": "golang-github-gofiber-fiber",
          "evidence": "/affected/0/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [],
        "affected_versions": [
          {
            "value": "3.3.0-1",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "3.4.0-1",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "3.5.0-1",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "3.5.0-4",
            "evidence": "/affected/0/versions"
          }
        ]
      }
    ],
    "severity": "medium",
    "structured": {
      "id": "UBUNTU-CVE-2026-44332",
      "aliases": [
        "UBUNTU-CVE-2026-44332"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N"
        },
        {
          "type": "Ubuntu",
          "score": "medium"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                }
              ]
            }
          ],
          "package": {
            "name": "golang-github-gofiber-fiber",
            "purl": "pkg:deb/ubuntu/golang-github-gofiber-fiber?arch=source&distro=stonking",
            "ecosystem": "Ubuntu:26.10"
          },
          "versions": [
            "3.3.0-1",
            "3.4.0-1",
            "3.5.0-1",
            "3.5.0-4"
          ],
          "database_specific": {
            "source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-44332.json"
          },
          "ecosystem_specific": {
            "binaries": [
              {
                "binary_name": "golang-github-gofiber-fiber-dev",
                "binary_version": "3.5.0-4"
              }
            ]
          }
        }
      ],
      "modified": "2026-10-17T12:58:20.455541024Z",
      "provider": "osv",
      "upstream": [
        "CVE-2026-44332"
      ],
      "references": [
        "https://ubuntu.com/security/CVE-2026-44332",
        "https://www.cve.org/CVERecord?id=CVE-2026-44332",
        "https://github.com/gofiber/fiber/commit/c7ac00edd19f9669b1aebbec6e229658baaa059e",
        "https://github.com/gofiber/fiber/pull/4245",
        "https://github.com/gofiber/fiber/releases/tag/v3.3.0",
        "https://github.com/gofiber/fiber/security/advisories/GHSA-g5vh-55hw-rxm8"
      ]
    },
    "related_cves": [
      {
        "value": "CVE-2026-44332",
        "evidence": "/upstream"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 358561,
  "published_at": "2026-07-08T20:16:00+00:00"
}