CVE-2023-27591

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

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.

Category

7.5
CVSS
Severity: High
CVSS 3.1 •
EPSS 0.19%
Vendor Advisory github.com
Affected: miniflux v2
Published at:
Updated at:

References

Link Tags
https://github.com/miniflux/v2/security/advisories/GHSA-3qjf-qh38-x73v vendor advisory
https://github.com/miniflux/v2/pull/1745 patch issue tracking
https://github.com/miniflux/v2/releases/tag/2.0.43 release notes
https://miniflux.app/docs/configuration.html#metrics-collector product

Frequently Asked Questions

What is the severity of CVE-2023-27591?
CVE-2023-27591 has been scored as a high severity vulnerability.
How to fix CVE-2023-27591?
To fix CVE-2023-27591, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2023-27591 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2023-27591 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2023-27591?
CVE-2023-27591 affects miniflux v2.
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