5.3

CVSS Score

4.0

-

CVSS Score

Basic Information

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CVE-2025-67713

CVE-2025-67713: Miniflux 2 has an Open Redirect via protocol-relative `redirect_url`

Miniflux 2 is an open source feed reader. Versions 2.2.14 and below treat redirect_url as safe when url.Parse(...).IsAbs() is false, enabling phishing flows after login. Protocol-relative URLs like //ikotaslabs.com have an empty scheme and pass that check, allowing post-login redirects to attacker-controlled sites. This issue is fixed in version 2.2.15.

(GitHub Advisory)

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CVE-2025-67713

CVE-2025-67713:

5.3

CVSS Score

4.0

-

CVSS Score

Basic Information

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Technical Details

Package Name	Ecosystem	Vulnerable Versions	First Patched Version
miniflux.app/v2	go	<= 2.2.14	2.2.15

Technical Details

Vulnerability Intelligence
Miggo AI

Root Cause Analysis

The analysis of the security patch commit 76df99f3a3db234cf6b312be5e771485213d03c7 clearly indicates that the vulnerability was located in the checkLogin function within the internal/ui/login_check.go file. The vulnerability is an open redirect, caused by improper validation of the redirect_url parameter. The original code used url.Parse(...).IsAbs() to determine if a URL was local. However, this check failed to account for protocol-relative URLs (e.g., //attacker.com), which are not absolute but cause the browser to redirect to an external site. The patch rectifies this by introducing a new, more stringent validation function, urllib.IsRelativePath, and applying it within handler.checkLogin. Therefore, handler.checkLogin is the function that processes the malicious input and contains the vulnerable logic.

Vulnerable functions

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WAF Protection Rules

WAF Rule

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Reasoning

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