Most severe vulnerabilities for vendor "miniflux"

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miniflux

miniflux miniflux

Miniflux MinifluxMiniflux 2.3.0 through 2.3.3 SSRF via Per-Feed Proxy URL

Risk 26

Severity

5.3

SSRF

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

Miniflux 2.3.0 through 2.3.3 contains a server-side request forgery vulnerability that allows authenticated users to reach internal addresses by setting a feed's proxyurl. Attackers can point proxyurl at loopback or internal hosts, bypassing FETCHERALLOWPRIVATENETWORKS checks to probe internal ports and send proxy-style requests to internal services.

First published (updated )

CVE-2026-108735

Miniflux MinifluxStored XSS in Miniflux Media Proxy due to improper Content-Security-Policy configuration

Risk 23

Severity

4.8

EPSS

0.05%

XSS

CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:A/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Summary

Due to a weak Content Security Policy on the /proxy/ route, an attacker can bypass the CSP of the media proxy and execute cross-site scripting when opening external images in a new tab/window.

Impact

A malicious feed added to Miniflux can execute arbitrary JavaScript in the user's browser when opening external resources, such as proxified images, in a new tab or window.

Mitigation

The CSP for the media proxy has been changed from default-src 'self' to default-src 'none'; form-action 'none'; sandbox;.

Upgrade to Miniflux >= 2.2.7

Credit RyotaK (GMO Flatt Security Inc.) with takumi-san.ai

1 / 2

Source: GitHub

First published (updated )

CVE-2025-31483

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SecAlerts Pty Ltd.
132 Wickham Terrace
Fortitude Valley,
QLD 4006, Australia
info@secalerts.co

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