CVE-2025-62407
📋 TL;DR
This CVE describes an open redirect vulnerability in Frappe web framework's login page. Attackers can craft malicious URLs that redirect users to arbitrary external sites after login. All Frappe applications using vulnerable versions are affected.
💻 Affected Systems
- Frappe Framework
📦 What is this software?
Frappe by Frappe
Frappe by Frappe
⚠️ Risk & Real-World Impact
Worst Case
Users could be redirected to phishing sites that steal credentials or deliver malware, potentially leading to account compromise and data breaches.
Likely Case
Attackers use this for phishing campaigns, tricking users into visiting malicious sites by abusing the legitimate Frappe domain in redirects.
If Mitigated
With proper user awareness training and browser security controls, users might recognize suspicious redirects before entering sensitive information.
🎯 Exploit Status
Exploitation requires crafting specific URL patterns and social engineering to get users to click malicious links.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 14.98.0 or 15.83.0
Vendor Advisory: https://github.com/frappe/frappe/security/advisories/GHSA-j9jr-qrpj-g855
Restart Required: No
Instructions:
1. Identify your Frappe version. 2. Upgrade to 14.98.0 if on version 14.x. 3. Upgrade to 15.83.0 if on version 15.x. 4. Test the login functionality after upgrade.
🔧 Temporary Workarounds
Input validation for redirect parameter
allImplement server-side validation to only allow redirects to trusted domains or relative paths
🧯 If You Can't Patch
- Implement WAF rules to block malicious redirect patterns in URLs
- Monitor logs for suspicious redirect attempts and educate users about phishing risks
🔍 How to Verify
Check if Vulnerable:
Check if Frappe version is below 14.98.0 (for v14) or below 15.83.0 (for v15)Check Version:
bench versionVerify Fix Applied:
Test login with various redirect URLs to confirm only allowed redirects work📡 Detection & Monitoring
Log Indicators:
- Unusual redirect patterns in authentication logs
- Multiple failed login attempts with external URLs in redirect parameter
Network Indicators:
- HTTP 302 redirects to external domains after login
- Suspicious referrer headers
SIEM Query:
source="frappe_logs" AND (redirect_url CONTAINS "http://" OR redirect_url CONTAINS "https://") AND NOT redirect_url CONTAINS "yourdomain.com"