In short
- CVE-2023-27591 is a HIGH (CVSS 7.5) vulnerability affecting miniflux.app, miniflux.app/v2, miniflux (miniflux project).
- Chance of exploitation in the next 30 days (EPSS): 0.76%, higher than 55.3% of all vulnerabilities.
- Fix: update to 2.0.43 or later.
Description
Impact
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).
Patches
PR #1745 fixes the problem. Available in Miniflux >= 2.0.43.
Workarounds
Set METRICS_COLLECTOR to false (default) or run Miniflux behind a trusted reverse-proxy.
References
NVD 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.
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