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© 2026 FAUCET Technologies LLC. All rights reserved.

CVE-2023-27591

23
FAUCET Score

CVE-2023-27591 affects Miniflux, a feed reader, prior to version 2.0.43, allowing an unauthenticated user to retrieve Prometheus metrics from publicly accessible instances under specific default configurations. This vulnerability carries a CVSS score of 7.5 (High), indicating a network-based attack with low complexity and high confidentiality impact, as sensitive metrics could be exposed. While no active exploitation, public exploit code, or significant community discussion has been observed, a patch is available in Miniflux 2.0.43, and workarounds include disabling the metrics collector or using a trusted reverse proxy.

Impacted Technologies

VendorProductVersion(s)CPE
< 2.0.43CPE matchmatch criteria
cpe:2.3:a:miniflux_project:miniflux:*:*:*:*:*:go:*:*

CVSS Data

CVSS version used by this source: 3.1

7.5HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
NONE
Availability Impact
NONE
Exploitability Score
3.9
Impact Score
3.6
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.76%
Probability of exploitation in next 30 days
EPSS Percentile
51.3%
Percentile rank of EPSS score among Peer Group
As of 2026-07-26
Model: v2026.06.15
This CVE's current EPSS score of 0.0076 is in the 27th percentile among its peer group of 51,485 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (2)

github_advisorypatch availablevia nvd_reference
View patch
gopatch availablevia ghsa
Product: miniflux.app/v2Fixed in: 2.0.43

Vendor Advisories (1)

goGHSA-3qjf-qh38-x73vhigh

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

Apr 2, 2025

References

github.com / miniflux/v2/pull/1745
Issue TrackingPatch
github.com / miniflux/v2/releases/tag/2.0.43
Release Notes
github.com / miniflux/v2/security/advisories/GHSA-3qjf-qh38-x73v
Vendor Advisory
miniflux.app / docs/configuration.html
Product