CVE-2025-31483: medium-severity vulnerability in miniflux v2
Stored XSS in Miniflux Media Proxy due to improper Content-Security-Policy configuration
Published
E-mail alert when it lands in KEV, gets a public PoC or its score goes up.
13Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 4.8epss 0.4%
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.
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
Affected products
miniflux · v2Related CVEs — miniflux v2
In the same product, most dangerous first.
CVE-2023-27591HIGHUnauthenticated Miniflux user can bypass allowed networks check to obtain Prometheus metricsEPSS 0.8%CVE-2023-27592MEDIUMStored XSS in Miniflux when opening a broken image due to unescaped ServerError in proxy handlerEPSS 0.6%CVE-2026-55185MEDIUMMiniflux 2: Open Redirect BypassEPSS 0.6%CVE-2026-21885MEDIUMMiniflux Media Proxy SSRF via /proxy endpoint allows access to internal network resourcesEPSS 0.3%CVE-2025-67713MEDIUMMiniflux 2 has an Open Redirect via protocol-relative `redirect_url`EPSS 0.2%