Information disclosure in Miniflux V2
CVE-2023-27591
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.
Vulnerability class: Information Disclosure
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N.
EPSS exploit prediction
EPSS: 0.008 (53.3th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 53rd percentile — 53.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.008 · newest: 0.008 · change: 0.000
Affected products
- Miniflux V2 — versions < 2.0.43
- Miniflux Project
Weakness classification (CWE)
Public proof-of-concept exploits
References
- github.com/miniflux/v2/security/advisories/GHSA-3qjf-qh38-x73v (Vendor Advisory)
- github.com/miniflux/v2/pull/1745 (Patch, Issue Tracking)
- github.com/miniflux/v2/releases/tag/2.0.43 (Release Notes)
- miniflux.app/docs/configuration.html (Product)
Frequently asked questions
- What is CVE-2023-27591?
- CVE-2023-27591 is a high-severity vulnerability in Miniflux V2, classified under Information Disclosure. CVSS score: 7.5/10. Published 2023-03-17.
- How severe is CVE-2023-27591?
- High severity. CVSS v3 base score is 7.5 out of 10.
- Is CVE-2023-27591 known to be exploited?
- 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.