CVE-2026-23848
📋 TL;DR
This vulnerability allows unauthenticated attackers to bypass IP-based rate limiting in MyTube by spoofing the X-Forwarded-For header. This enables unlimited requests to protected API endpoints, potentially leading to denial of service attacks. All MyTube instances prior to version 1.7.71 are affected.
💻 Affected Systems
- MyTube
📦 What is this software?
Mytube by Franklioxygen
⚠️ Risk & Real-World Impact
Worst Case
Complete service disruption through sustained DoS attacks, potentially affecting all users and functionality of the MyTube instance.
Likely Case
Degraded service performance due to excessive API requests, potentially impacting user experience and system stability.
If Mitigated
Minimal impact with proper rate limiting and header validation in place, maintaining normal service functionality.
🎯 Exploit Status
Exploitation requires only HTTP header manipulation, making it trivial for attackers with basic knowledge.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 1.7.71
Vendor Advisory: https://github.com/franklioxygen/MyTube/security/advisories/GHSA-59gr-529g-x45h
Restart Required: Yes
Instructions:
1. Backup your current MyTube configuration and data. 2. Update MyTube to version 1.7.71 or later. 3. Restart the MyTube service. 4. Verify the update was successful.
🔧 Temporary Workarounds
Web Server Header Filtering
allConfigure your reverse proxy or web server to strip or validate X-Forwarded-For headers before they reach MyTube.
# For nginx: proxy_set_header X-Forwarded-For $remote_addr;
# For Apache: RequestHeader unset X-Forwarded-For
Network-Level Rate Limiting
allImplement rate limiting at the network perimeter (firewall, WAF, or load balancer) to supplement application-level controls.
🧯 If You Can't Patch
- Implement a web application firewall (WAF) with rate limiting rules that validate X-Forwarded-For headers.
- Deploy MyTube behind a reverse proxy that properly handles and validates client IP addresses.
🔍 How to Verify
Check if Vulnerable:
Check your MyTube version. If it's below 1.7.71, you are vulnerable. Test by sending requests with manipulated X-Forwarded-For headers to rate-limited endpoints.Check Version:
Check the MyTube web interface or configuration files for version information.Verify Fix Applied:
After updating to 1.7.71+, test that rate limiting works correctly even with manipulated X-Forwarded-For headers.📡 Detection & Monitoring
Log Indicators:
- Unusually high request rates from single IPs
- Multiple requests with varying X-Forwarded-For headers from same source
Network Indicators:
- High volume of requests to API endpoints
- Requests with manipulated X-Forwarded-For headers
SIEM Query:
source="mytube" AND (http_user_agent="*" AND status=429) | stats count by src_ip