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.
CVE-2023-27591
This high-severity CVE scores 7.5 under NVD CVSS v3. EPSS exploit probability: 0.5%, top 34% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).
- High severity, but no confirmed exploitation yet
No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.
- CVSS v3
- 7.5
- EG Score
- 7.5(medium)
- EPSS
- 50.8%
- KEV
- Not listed
Published
March 17, 2023
Last Modified
November 21, 2024
References (8)
- security-advisories@githubhttps://github.com/miniflux/v2/pull/1745
- security-advisories@githubhttps://github.com/miniflux/v2/releases/tag/2.0.43
- security-advisories@githubhttps://github.com/miniflux/v2/security/advisories/GHSA-3qjf-qh38-x73v
- security-advisories@githubhttps://miniflux.app/docs/configuration.html#metrics-collector
- af854a3a-2127-422b-91ae-364da2661108https://github.com/miniflux/v2/pull/1745
- af854a3a-2127-422b-91ae-364da2661108https://github.com/miniflux/v2/releases/tag/2.0.43
- af854a3a-2127-422b-91ae-364da2661108https://github.com/miniflux/v2/security/advisories/GHSA-3qjf-qh38-x73v
- af854a3a-2127-422b-91ae-364da2661108https://miniflux.app/docs/configuration.html#metrics-collector
Affected Packages
(2 across 1 ecosystem)
Go(2)
| Package | Vulnerable range | Fixed in | Dependents |
|---|---|---|---|
| miniflux.app | — | — | — |
| miniflux.app/v2 | — | 2.0.43 | — |
Weakness Classification(2)
MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.
Data Freshness Timeline
(refreshed 9× in last 7d / 44× in last 30d)
Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.
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- 2026-05-25 05:03 UTCEG score recompute
- 2026-05-24 05:07 UTCOSV refresh
Related CVEs(same CWE)
Same CWE
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Frequently asked(5)
What is CVE-2023-27591?
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Dependency Blast Radius
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