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TI-2023-12301 Aliases CVE-2023-27591GHSA-3qjf-qh38-x73v

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

Priority MEDIUM 40CWE-1220Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
Information disclosure
Confidentiality · integrity · availability
High · None · None
Fix status
Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA and GitHub. Impact type from CWE-200.

Summary

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.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00755 55th percentileScored 2026-11-07
Fix Fixed v2 (miniflux): 2.0.43miniflux.app/v2 (Go): 2.0.43

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
Yes
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
minifluxv2before 2.0.432.0.43Patch availableCNA
—miniflux.app/v2 (Go)before 2.0.432.0.43Patch availableGHSA-3qjf-qh38-x73v
—miniflux.app (Go)up to 1.0.46—No fix listedGHSA-3qjf-qh38-x73v
  • v2 Vendorminiflux Affected before 2.0.43 Fixed in 2.0.43 Patch available CNA
  • miniflux.app/v2 (Go) Vendor— Affected before 2.0.43 Fixed in 2.0.43 Patch available GHSA-3qjf-qh38-x73v
  • miniflux.app (Go) Vendor— Affected up to 1.0.46 Fixed in — No fix listed GHSA-3qjf-qh38-x73v

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:miniflux_project:miniflux:*:*:*:*:*:go:*:*before 2.0.43Vulnerableminiflux
  • cpe:2.3:a:miniflux_project:miniflux:*:*:*:*:*:go:*:* Versions before 2.0.43 Vulnerable ·miniflux

Remediation

  • Fix · CNA v2 (miniflux) Fixed in 2.0.43
  • Fix · GHSA-3qjf-qh38-x73v miniflux.app/v2 (Go) Fixed in 2.0.43 Advisory →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2023-27591
  2. 2026-10-03 Alias added: GHSA-3qjf-qh38-x73v

References

Patch 1

Advisory 2

Other 3

  • TI-2026-17586 Miniflux Media Proxy SSRF via /proxy endpoint allows access to internal network resources CVSS 3.1MEDIUM 6.5
  • TI-2025-41410 Miniflux 2 has an Open Redirect via protocol-relative `redirect_url` CVSS 4.0MEDIUM 5.3
  • TI-2023-12302 Stored XSS in Miniflux when opening a broken image due to unescaped ServerError in proxy handler CVSS 3.1MEDIUM 5.4

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences