CVE-2023-27591 HIGH

CVE-2023-27591: Unauthenticated Miniflux user can bypass allowed networks check to obtain Prometheus metrics

Vendor Miniflux
Product v2
Weakness CWE-1220
Published March 17, 2023
Last update February 25, 2025
View on NVD All CVEs

CVSS base score

7.5/10
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Confidentiality High
Integrity None

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

What the vulnerability does

01Description

Miniflux is a feed reader. Prior to version 2.0.43, an unauthenticated user can retrieve Prometheus metrics from a publicly reachable Miniflux instance where the `METRICS_COLLECTOR` configuration option is enabled and `METRICS_ALLOWED_NETWORKS` is set to `127.0.0.1/8` (the default). A patch is available in Miniflux 2.0.43. As a workaround, set `METRICS_COLLECTOR` to `false` (default) or run Miniflux behind a trusted reverse-proxy.

Key dates

02Disclosure timeline

March 17, 2023 CVE published
February 25, 2025 Record updated