Nginx UI: Backup restore follows crafted symlinks into the live Nginx configuration path before restore flags are applied

{
  "id": "1325052df2744492eff226075aae2adb93c1a03ce244872f1df9fa6a8ab7a4f6",
  "url": "https://osv.dev/vulnerability/GHSA-p8v3-89rh-jxc7",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "Nginx UI: Backup restore follows crafted symlinks into the live Nginx configuration path before restore flags are applied",
    "summary": "### Summary An authenticated user who can create and restore a backup can craft a valid backup archive that causes the restore staging process to write attacker-controlled files into the live Nginx configuration path even when both `restore_nginx` and `restore_nginx_ui` are set to `false`. ### Details The restore flow always extracts the outer archive, verifies the manifest, decrypts `nginx-ui.zip` and `nginx.zip`, and extracts both inner archives before it decides whether `RestoreNginx` or `RestoreNginxUI` should be applied. The zip extractor explicitly allows absolute symlinks when the link target is under `nginx.GetConfPath()` or `nginx.GetModulesPath()`. Later regular-file entries are then created with `os.OpenFile()` on the symlinked path, which follows the symlink and writes into the live path. Relevant code paths: - [internal/backup/restore.go](/home/kali/Desktop/bounty/nginx-ui/internal/backup/restore.go:39) - [internal/backup/restore.go](/home/kali/Desktop/bounty/nginx-ui/internal/backup/restore.go:79) - [internal/backup/restore.go](/home/kali/Desktop/bounty/nginx-ui/internal/backup/restore.go:204) - [internal/backup/restore.go](/home/kali/Desktop/bounty/nginx-ui/internal/backup/restore.go:286) - [api/backup/restore.go](/home/kali/Desktop/bounty/nginx-ui/api/backup/restore.go:31) - [api/backup/backup.go](/home/kali/Desktop/bounty/nginx-ui/api/backup/backup.go:15) This means the restore trust boundary is broken during extraction. A restore request that explicitly opte",
    "evidence": "osv:GHSA-p8v3-89rh-jxc7",
    "products": [
      {
        "name": {
          "value": "github.com/0xJacky/Nginx-UI",
          "evidence": "/affected/0/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "1.9.10-0.20260728074146-a467ed652591",
            "evidence": "/affected/0/ranges"
          }
        ],
        "affected_versions": []
      }
    ],
    "severity": "high",
    "structured": {
      "id": "GHSA-p8v3-89rh-jxc7",
      "aliases": [
        "CVE-2026-107810",
        "GHSA-p8v3-89rh-jxc7",
        "GO-2026-6707"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "type": "SEMVER",
              "events": [
                {
                  "introduced": "1.9.10-0.20250517140552-daee3ac7ade1"
                },
                {
                  "fixed": "1.9.10-0.20260728074146-a467ed652591"
                }
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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://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/10/GHSA-p8v3-89rh-jxc7/GHSA-p8v3-89rh-jxc7.json"
          }
        }
      ],
      "modified": "2026-10-19T21:40:47.010282307Z",
      "provider": "osv",
      "references": [
        "https://github.com/0xJacky/nginx-ui/security/advisories/GHSA-p8v3-89rh-jxc7",
        "https://github.com/0xJacky/nginx-ui/commit/a467ed652591fc0cd1b466a1ec751b493faef9f7",
        "https://github.com/0xJacky/nginx-ui",
        "https://github.com/0xJacky/nginx-ui/releases/tag/v2.5.0"
      ],
      "provider_metadata": {
        "cwe_ids": [
          "CWE-59",
          "CWE-61"
        ],
        "severity": "HIGH",
        "github_reviewed": true,
        "nvd_published_at": null,
        "github_reviewed_at": "2026-10-09T17:07:05Z"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-107810",
        "evidence": "/aliases"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/database_specific/severity"
  },
  "source_id": "core-osv",
  "document_id": 376737,
  "published_at": "2026-10-09T17:07:05+00:00"
}

{
  "id": "5a12070b4c54dfcc15e7505583b36df4b8594a1fcfd98152862059ddcc9cf541",
  "url": "https://osv.dev/vulnerability/GO-2026-6707",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "Nginx UI: Backup restore follows crafted symlinks into the live Nginx configuration path before restore flags are applied in github.com/0xJacky/Nginx-UI",
    "summary": "Nginx UI: Backup restore follows crafted symlinks into the live Nginx configuration path before restore flags are applied in github.com/0xJacky/Nginx-UI",
    "evidence": "osv:GO-2026-6707",
    "products": [
      {
        "name": {
          "value": "github.com/0xJacky/Nginx-UI",
          "evidence": "/affected/0/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "1.9.10-0.20260728074146-a467ed652591",
            "evidence": "/affected/0/ranges"
          }
        ],
        "affected_versions": []
      }
    ],
    "severity": "unknown",
    "structured": {
      "id": "GO-2026-6707",
      "aliases": [
        "CVE-2026-107810",
        "GHSA-p8v3-89rh-jxc7",
        "GO-2026-6707"
      ],
      "affected": [
        {
          "ranges": [
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              "type": "SEMVER",
              "events": [
                {
                  "introduced": "1.9.10-0.20250517140552-daee3ac7ade1"
                },
                {
                  "fixed": "1.9.10-0.20260728074146-a467ed652591"
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            "purl": "pkg:golang/github.com/0xJacky/Nginx-UI",
            "ecosystem": "Go"
          },
          "database_specific": {
            "source": "https://vuln.go.dev/ID/GO-2026-6707.json"
          },
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        }
      ],
      "modified": "2026-10-19T21:31:49.020482940Z",
      "provider": "osv",
      "references": [
        "https://github.com/0xJacky/nginx-ui/security/advisories/GHSA-p8v3-89rh-jxc7",
        "https://github.com/0xJacky/nginx-ui/commit/a467ed652591fc0cd1b466a1ec751b493faef9f7",
        "https://github.com/0xJacky/nginx-ui/releases/tag/v2.5.0"
      ],
      "provider_metadata": {
        "url": "https://pkg.go.dev/vuln/GO-2026-6707",
        "review_status": "UNREVIEWED"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-107810",
        "evidence": "/aliases"
      }
    ],
    "security_relevant": true,
    "severity_evidence": null
  },
  "source_id": "core-osv",
  "document_id": 376683,
  "published_at": "2026-10-19T21:08:26+00:00"
}