{
  "schema_version": "1.4.0",
  "id": "GHSA-3qjf-qh38-x73v",
  "modified": "2025-04-02T17:24:11Z",
  "published": "2025-04-02T17:24:11Z",
  "aliases": [
    "CVE-2023-27591"
  ],
  "summary": "Unauthenticated Miniflux user can bypass allowed networks check to obtain Prometheus metrics",
  "details": "### Impact\n\nAn unauthenticated user can retrieve Prometheus metrics from a publicly reachable Miniflux instance where the `METRICS_COLLECTOR` [configuration option](https://miniflux.app/docs/configuration.html#metrics-collector) is enabled and `METRICS_ALLOWED_NETWORKS` is set to `127.0.0.1/8` (the default).\n\n### Patches\n\nPR #1745 fixes the problem. Available in Miniflux >= 2.0.43.\n\n### Workarounds\n\nSet `METRICS_COLLECTOR` to `false` (default) or run Miniflux behind a trusted reverse-proxy.\n\n### References\n\n- https://miniflux.app/docs/configuration.html#metrics-collector\n- https://miniflux.app/docs/configuration.html#metrics-allowed-networks",
  "severity": [
    {
      "type": "CVSS_V3",
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N"
    }
  ],
  "affected": [
    {
      "package": {
        "ecosystem": "Go",
        "name": "miniflux.app/v2"
      },
      "ranges": [
        {
          "type": "ECOSYSTEM",
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2.0.43"
            }
          ]
        }
      ],
      "database_specific": {
        "last_known_affected_version_range": "<= 2.0.42"
      }
    },
    {
      "package": {
        "ecosystem": "Go",
        "name": "miniflux.app"
      },
      "ranges": [
        {
          "type": "ECOSYSTEM",
          "events": [
            {
              "introduced": "0"
            },
            {
              "last_affected": "1.0.46"
            }
          ]
        }
      ]
    }
  ],
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/miniflux/v2/security/advisories/GHSA-3qjf-qh38-x73v"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2023-27591"
    },
    {
      "type": "WEB",
      "url": "https://github.com/miniflux/v2/pull/1745"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/miniflux/v2"
    },
    {
      "type": "WEB",
      "url": "https://github.com/miniflux/v2/releases/tag/2.0.43"
    },
    {
      "type": "WEB",
      "url": "https://miniflux.app/docs/configuration.html#metrics-collector"
    }
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-1220",
      "CWE-200"
    ],
    "severity": "HIGH",
    "github_reviewed": true,
    "github_reviewed_at": "2025-04-02T17:24:11Z",
    "nvd_published_at": "2023-03-17T20:15:00Z"
  }
}