Nginx-UI AuthRequired token cookie fallback enables CSRF against management APIs

{
  "id": "d730ee4476aa68a50acc500edb45de333b1de2cdf26d763d252fdc116ed00896",
  "url": "https://osv.dev/vulnerability/GHSA-33rr-wq23-g6gg",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "Nginx-UI AuthRequired token cookie fallback enables CSRF against management APIs",
    "summary": "## Summary Nginx-UI v2.4.3 stores the API JWT in a browser cookie named `token` and the `AuthRequired` middleware accepts that cookie as an authentication source. Because management endpoints are protected by `AuthRequired` and do not enforce a universal CSRF token or Origin/Referer check, a remote attacker can induce a logged-in administrator to submit cross-site state-changing requests. The attacker does not need to read the cross-origin response; the browser-sent cookie is enough to authenticate the request. ## Details The root cause is a trust-boundary failure between browser-managed cookies and API bearer-token authentication. In `app/src/pinia/moudule/user.ts:25-35`, the front end writes the JWT to a `token` cookie when the token changes. In `internal/middleware/middleware.go:16-36`, `getToken` first checks the `Authorization` header and `token` query parameter, then falls back to `c.Cookie(\"token\")`. That fallback causes browser-initiated cross-site requests to carry a valid API credential automatically. The route group in `router/routers.go:87-110` applies `middleware.AuthRequired()` to many management modules, including `config.InitRouter`, `nginx.InitRouter`, `settings.InitRouter`, and backup-related handlers. For accounts without OTP/Passkey, `RequireSecureSession` does not provide a universal second factor for all state-changing operations. A representative sink is `api/config/add.go:68-78`, where an authenticated request writes Nginx configuration with `os.WriteF",
    "evidence": "osv:GHSA-33rr-wq23-g6gg",
    "products": [
      {
        "name": {
          "value": "github.com/0xJacky/Nginx-UI",
          "evidence": "/affected/0/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "1.9.10-0.20260728074433-a3999bd78a3b",
            "evidence": "/affected/0/ranges"
          }
        ],
        "affected_versions": []
      }
    ],
    "severity": "high",
    "structured": {
      "id": "GHSA-33rr-wq23-g6gg",
      "aliases": [
        "CVE-2026-107809",
        "GHSA-33rr-wq23-g6gg",
        "GO-2026-6703"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "type": "SEMVER",
              "events": [
                {
                  "introduced": "1.9.10-0.20250517140552-daee3ac7ade1"
                },
                {
                  "fixed": "1.9.10-0.20260728074433-a3999bd78a3b"
                }
              ]
            }
          ],
          "package": {
            "name": "github.com/0xJacky/Nginx-UI",
            "purl": "pkg:golang/github.com/0xJacky/Nginx-UI",
            "ecosystem": "Go"
          },
          "database_specific": {
            "source": "https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/10/GHSA-33rr-wq23-g6gg/GHSA-33rr-wq23-g6gg.json"
          }
        }
      ],
      "modified": "2026-10-19T21:41:07.284327902Z",
      "provider": "osv",
      "references": [
        "https://github.com/0xJacky/nginx-ui/security/advisories/GHSA-33rr-wq23-g6gg",
        "https://github.com/0xJacky/nginx-ui/commit/a3999bd78a3b97ab22e6b5e9fd478ac57598a954",
        "https://github.com/0xJacky/nginx-ui",
        "https://github.com/0xJacky/nginx-ui/releases/tag/v2.5.0"
      ],
      "provider_metadata": {
        "cwe_ids": [
          "CWE-352"
        ],
        "severity": "HIGH",
        "github_reviewed": true,
        "nvd_published_at": null,
        "github_reviewed_at": "2026-10-09T17:08:10Z"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-107809",
        "evidence": "/aliases"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/database_specific/severity"
  },
  "source_id": "core-osv",
  "document_id": 376776,
  "published_at": "2026-10-09T17:08:10+00:00"
}

{
  "id": "a5dd59f0089f707ff65fe825d77e13be5b81c4b9c6530377f94fbeb232a800e9",
  "url": "https://osv.dev/vulnerability/GO-2026-6703",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "Nginx-UI AuthRequired token cookie fallback enables CSRF against management APIs in github.com/0xJacky/Nginx-UI",
    "summary": "Nginx-UI AuthRequired token cookie fallback enables CSRF against management APIs in github.com/0xJacky/Nginx-UI",
    "evidence": "osv:GO-2026-6703",
    "products": [
      {
        "name": {
          "value": "github.com/0xJacky/Nginx-UI",
          "evidence": "/affected/0/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "1.9.10-0.20260728074433-a3999bd78a3b",
            "evidence": "/affected/0/ranges"
          }
        ],
        "affected_versions": []
      }
    ],
    "severity": "unknown",
    "structured": {
      "id": "GO-2026-6703",
      "aliases": [
        "CVE-2026-107809",
        "GHSA-33rr-wq23-g6gg",
        "GO-2026-6703"
      ],
      "affected": [
        {
          "ranges": [
            {
              "type": "SEMVER",
              "events": [
                {
                  "introduced": "1.9.10-0.20250517140552-daee3ac7ade1"
                },
                {
                  "fixed": "1.9.10-0.20260728074433-a3999bd78a3b"
                }
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          ],
          "package": {
            "name": "github.com/0xJacky/Nginx-UI",
            "purl": "pkg:golang/github.com/0xJacky/Nginx-UI",
            "ecosystem": "Go"
          },
          "database_specific": {
            "source": "https://vuln.go.dev/ID/GO-2026-6703.json"
          },
          "ecosystem_specific": {}
        }
      ],
      "modified": "2026-10-19T21:31:52.274284585Z",
      "provider": "osv",
      "references": [
        "https://github.com/0xJacky/nginx-ui/security/advisories/GHSA-33rr-wq23-g6gg",
        "https://github.com/0xJacky/nginx-ui/commit/a3999bd78a3b97ab22e6b5e9fd478ac57598a954",
        "https://github.com/0xJacky/nginx-ui/releases/tag/v2.5.0"
      ],
      "provider_metadata": {
        "url": "https://pkg.go.dev/vuln/GO-2026-6703",
        "review_status": "UNREVIEWED"
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    },
    "related_cves": [
      {
        "value": "CVE-2026-107809",
        "evidence": "/aliases"
      }
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    "security_relevant": true,
    "severity_evidence": null
  },
  "source_id": "core-osv",
  "document_id": 376706,
  "published_at": "2026-10-19T21:08:26+00:00"
}