CVE-2025-31483 MEDIUM

CVE-2025-31483: Stored XSS in Miniflux Media Proxy due to improper Content-Security-Policy configuration

Vendor Miniflux
Product v2
Weakness CWE-79 · XSS
Published April 3, 2025
Last update April 3, 2025
View on NVD All CVEs

CVSS base score

4.8/10
Attack vector Network
Attack complexity Low
Privileges required Low
User interaction —
Confidentiality —
Integrity —

CVSS vector

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

What the vulnerability does

01Description

Miniflux is a feed reader. 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. To mitigate the vulnerability, the CSP for the media proxy has been changed from default-src 'self' to default-src 'none'; form-action 'none'; sandbox;. This vulnerability is fixed in 2.2.7.

Key dates

02Disclosure timeline

April 3, 2025 CVE published
April 3, 2025 Record updated

Related vulnerabilities

04Related CVE

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