CVE-2023-27591

Unauthenticated Miniflux user can bypass allowed networks check to obtain Prometheus metrics

State: Published
Severity: 7.5 High
Published: Mar 17, 2023
Updated: Feb 25, 2025
Reserved: Mar 4, 2023

Description

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.

Scores

CVSS	Score	Vector	Source
3.1	7.5 High	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N	GitHub_M

Weaknesses

CWE-1220 Insufficient Granularity of Access Control
CWE-200 Exposure of Sensitive Information to an Unauthorized Actor

Affected Products

Product	Versions
v2miniflux	< 2.0.43Affected

References

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