Nginx UI: Authentication bypass: password login does not enforce a passkey-only second factor (2FA bypass)

{
  "id": "ea9ea61f0f2f16e9e0f23510ae3b311f91610437417b27d339534b1d1ddd4470",
  "url": "https://osv.dev/vulnerability/CVE-2026-107808",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "Nginx UI: Authentication bypass: password login does not enforce a passkey-only second factor (2FA bypass)",
    "summary": "Nginx UI is a web user interface for the Nginx web server. From 2.0.0 until 2.5.0, POST /api/login checks EnabledOTP but does not require a WebAuthn assertion when EnabledPasskey is true and no TOTP secret is configured. A passkey-only account is therefore issued a session after password verification, despite Enabled2FA reporting that the account has a second factor. An attacker who obtains the password can take over the account and reach administrative functionality without the registered passkey. This issue is fixed in version 2.5.0.",
    "evidence": "osv:CVE-2026-107808",
    "products": [],
    "severity": "high",
    "structured": {
      "id": "CVE-2026-107808",
      "aliases": [
        "CVE-2026-107808",
        "GHSA-45gv-9wjv-xh7p",
        "GO-2026-6704"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/0xjacky/nginx-ui",
              "type": "GIT",
              "events": [
                {
                  "introduced": "daee3ac7ade1162805b3af07807e2f4dc2affaf5"
                },
                {
                  "fixed": "acb59fdd81dbdd60abd0004e9ade573186a3be43"
                },
                {
                  "fixed": "95cd21b70814e5d9a48a359aa238aeea1ac97429"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:nginxui:nginx_ui:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "2.0.0"
                      },
                      {
                        "fixed": "2.5.0"
                      }
                    ],
                    "source": "CPE_RANGE"
                  },
                  {
                    "range": [
                      {
                        "fixed": "95cd21b70814e5d9a48a359aa238aeea1ac97429"
                      }
                    ],
                    "source": "REFERENCES_COMMIT"
                  },
                  {
                    "range": [
                      {
                        "fixed": "acb59fdd81dbdd60abd0004e9ade573186a3be43"
                      }
                    ],
                    "source": "REFERENCES_TAG",
                    "original_tag": "v2.5.0"
                  }
                ]
              }
            }
          ],
          "versions": [
            "v2.4.3",
            "v2.4.2",
            "v2.4.1",
            "v2.4.0",
            "v2.3.11",
            "v2.3.10",
            "v2.3.9",
            "v2.3.8",
            "v2.3.7",
            "v2.3.6",
            "v2.3.5",
            "v2.3.4",
            "v2.3.3",
            "v2.3.2",
            "v2.3.1",
            "v2.3.0",
            "v2.2.1",
            "v2.2.0-patch.1",
            "v2.2.0",
            "v2.1.17",
            "v2.1.16",
            "v2.1.15",
            "v2.1.14",
            "v2.1.13",
            "v2.1.12",
            "v2.1.11",
            "v2.1.10",
            "v2.1.9",
            "v2.1.8",
            "v2.1.7",
            "v2.1.6",
            "v2.1.5",
            "v2.1.4-patch.1",
            "v2.1.4",
            "v2.1.3",
            "v2.1.2",
            "v2.1.1",
            "v2.1.0-patch.1",
            "v2.1.0",
            "v2.1.0-rc.3",
            "v2.1.0-rc.2",
            "v2.1.0-rc.1",
            "v2.1.0-beta.1",
            "v2.0.2",
            "v2.0.1",
            "v2.0.0"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-107808.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:51.092795596Z",
      "provider": "osv",
      "references": [
        "https://github.com/0xJacky/nginx-ui/releases/tag/v2.5.0",
        "https://github.com/0xJacky/nginx-ui/security/advisories/GHSA-45gv-9wjv-xh7p",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/107xxx/CVE-2026-107808.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-107808",
        "https://github.com/0xJacky/nginx-ui/commit/95cd21b70814e5d9a48a359aa238aeea1ac97429"
      ],
      "provider_metadata": {
        "cwe_ids": [
          "CWE-287",
          "CWE-305",
          "CWE-308"
        ],
        "cna_assigner": "GitHub_M",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/107xxx/CVE-2026-107808.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-107808",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 519921,
  "published_at": "2026-10-09T15:11:44.387+00:00"
}