{"id":"GHSA-3qjf-qh38-x73v","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 \u003e= 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","aliases":["CVE-2023-27591"],"modified":"2026-09-10T03:50:57.049458040Z","published":"2025-04-02T17:24:11Z","database_specific":{"github_reviewed":true,"github_reviewed_at":"2025-04-02T17:24:11Z","nvd_published_at":"2023-03-17T20:15:00Z","cwe_ids":["CWE-1220","CWE-200"],"severity":"HIGH"},"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"}],"affected":[{"package":{"name":"miniflux.app/v2","ecosystem":"Go","purl":"pkg:golang/miniflux.app/v2"},"ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"2.0.43"}]}],"database_specific":{"source":"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2025/04/GHSA-3qjf-qh38-x73v/GHSA-3qjf-qh38-x73v.json","last_known_affected_version_range":"\u003c= 2.0.42"}},{"package":{"name":"miniflux.app","ecosystem":"Go","purl":"pkg:golang/miniflux.app"},"ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"last_affected":"1.0.46"}]}],"database_specific":{"source":"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2025/04/GHSA-3qjf-qh38-x73v/GHSA-3qjf-qh38-x73v.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N"}]}