CVE-2023-27591

Name: CVE-2023-27591
Creator: NVD / NIST
Published: 2023-03-17T20:15:13.1+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.5/10EPSS 0.76%

Last modified Jun 17, 2026

CVE-2023-27591 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. 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). EPSS estimates a 0.76% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1

7.5/10

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

EPSS Probability

0.76%

50.4th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Miniflux Project	Miniflux	< 2.0.43

References

https://github.com/miniflux/v2/pull/1745Issue Tracking, Patch
https://github.com/miniflux/v2/releases/tag/2.0.43Release Notes
https://github.com/miniflux/v2/security/advisories/GHSA-3qjf-qh38-x73vVendor Advisory
https://miniflux.app/docs/configuration.html#metrics-collectorProduct
https://github.com/miniflux/v2/pull/1745Issue Tracking, Patch
https://github.com/miniflux/v2/releases/tag/2.0.43Release Notes
https://github.com/miniflux/v2/security/advisories/GHSA-3qjf-qh38-x73vVendor Advisory
https://miniflux.app/docs/configuration.html#metrics-collectorProduct

Timeline

Published: Mar 17, 2023
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2023-27591?

How severe is CVE-2023-27591?

CVE-2023-27591 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 0.76% probability of exploitation in the next 30 days.

How do I fix CVE-2023-27591?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2023-27591?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST