TI-2025-22664 Aliases CVE-2025-31483 GHSA-cq88-842x-2jhp

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

LOW 22CWE-79Published 2025-04-03 · Updated 2025-04-03

Key facts

Attack vector: Network
Privileges required: Low
User interaction: Active
Attack complexity: Low
Attack requirements: None
Impact type: Cross-site scripting
Confidentiality · integrity · availability: Low · Low · None
Fix status: Fixed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA and GitHub. Impact type from CWE-79.

Summary

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.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV

EPSS 0.00426 37th percentileScored 2026-11-07

Fix Fixed v2 (miniflux): 2.2.7miniflux.app/v2 (Go): 2.2.7

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: None
Automatable: No
Technical impact: Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
miniflux	v2	before 2.2.7	2.2.7	Patch available	CNA
—	miniflux.app/v2 (Go)	before 2.2.7	2.2.7	Patch available	GHSA-cq88-842x-2jhp

v2 Vendorminiflux Affected before 2.2.7 Fixed in 2.2.7 Patch available CNA
miniflux.app/v2 (Go) Vendor— Affected before 2.2.7 Fixed in 2.2.7 Patch available GHSA-cq88-842x-2jhp

CPE names Threatist (inferred) · 1

Inferred from how NVD named this product before; not given by a source.

CPE	Versions	Role	Vendor
cpe:2.3:a:miniflux_project:miniflux::::::::	—	—	miniflux

cpe:2.3:a:miniflux_project:miniflux:*:*:*:*:*:*:*:* Versions — — ·miniflux

Remediation

Fix · CNA v2 (miniflux) Fixed in 2.2.7
Fix · GHSA-cq88-842x-2jhp miniflux.app/v2 (Go) Fixed in 2.2.7 Advisory →

Timeline

2026-10-02 Threatist record created from CVE-2025-31483
2026-10-03 Alias added: GHSA-cq88-842x-2jhp

References

Advisory 1

https://nvd.nist.gov/vuln/detail/CVE-2025-31483

Other 3

TI-2026-17586 Miniflux Media Proxy SSRF via /proxy endpoint allows access to internal network resources CVSS 3.1MEDIUM 6.5
TI-2026-70714 Server-side request forgery in Miniflux via per-feed proxy URL CVSS 4.0MEDIUM 5.3
TI-2025-41410 Miniflux 2 has an Open Redirect via protocol-relative `redirect_url` CVSS 4.0MEDIUM 5.3
TI-2026-39867 Miniflux 2: Open Redirect Bypass CVSS 4.0MEDIUM 5.1
TI-2023-12301 Unauthenticated Miniflux user can bypass allowed networks check to obtain Prometheus metrics CVSS 3.1HIGH 7.5
TI-2023-12302 Stored XSS in Miniflux when opening a broken image due to unescaped ServerError in proxy handler CVSS 3.1MEDIUM 5.4

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences