CVE-2025-31483 – miniflux.app/v2

Package

Manager: go
Name: miniflux.app/v2
Vulnerable Version: >=0 <2.2.7

Severity

Level: Medium

CVSS v3.1: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:N/A:N/E:H/RL:U/RC:R

CVSS v4.0: 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

EPSS: 0.00046 pctl0.13488

Details

Miniflux Media Proxy vulnerable to Stored Cross-site Scripting due to improper Content-Security-Policy configuration ## 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](https://ryotak.net) (GMO Flatt Security Inc.) with [takumi-san.ai](https://takumi-san.ai)

Metadata

Created: 2025-04-04T14:09:40Z
Modified: 2025-04-07T19:52:04Z
Source: https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2025/04/GHSA-cq88-842x-2jhp/GHSA-cq88-842x-2jhp.json
CWE IDs: ["CWE-79"]
Alternative ID: GHSA-cq88-842x-2jhp
Finding: F425
Auto approve: 1