CVE-2026-26005
📋 TL;DR
ClipBucket v5's Remote Play feature allows users to create video entries referencing external URLs. Attackers can exploit this by specifying internal network hosts in video URLs, triggering Server-Side Request Forgery (SSRF) attacks that send GET requests to internal servers. This vulnerability affects all ClipBucket v5 installations prior to version 5.5.3 - #45, and can be exploited by regular non-privileged users.
💻 Affected Systems
- ClipBucket v5
📦 What is this software?
Clipbucket by Oxygenz
⚠️ Risk & Real-World Impact
Worst Case
Attackers could map internal network infrastructure, access sensitive internal services, or potentially chain with other vulnerabilities to gain further access to internal systems.
Likely Case
Internal network reconnaissance and information disclosure about internal services, potentially leading to further targeted attacks.
If Mitigated
Limited to information gathering about internal network structure if proper network segmentation and access controls are in place.
🎯 Exploit Status
Exploitation requires user authentication but no special privileges. The attack vector is straightforward - simply creating a video entry with a malicious URL.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 5.5.3 - #45
Vendor Advisory: https://github.com/MacWarrior/clipbucket-v5/security/advisories/GHSA-69xj-2pq3-5r4v
Restart Required: No
Instructions:
1. Update ClipBucket v5 to version 5.5.3 - #45 or later. 2. Apply the patch from commit a9e0f2322fb37501dfd4f44079fc7826a132503a. 3. Verify the fix by testing Remote Play functionality with internal URLs.
🔧 Temporary Workarounds
Disable Remote Play Feature
allTemporarily disable the Remote Play functionality that allows external video URLs.
# Modify ClipBucket configuration to disable remote video URL processing
# Check configuration files for 'remote_play' or similar settings
Implement URL Validation
allAdd server-side validation to reject internal IP addresses and localhost URLs in video entries.
# Add validation in video processing code to block:
# - 127.0.0.0/8, ::1
# - 10.0.0.0/8, 172.16.0.0/12, 192.168.0.0/16
# - Link-local addresses (169.254.0.0/16, fe80::/10)
🧯 If You Can't Patch
- Implement strict network segmentation to isolate ClipBucket servers from sensitive internal networks
- Deploy web application firewall (WAF) rules to detect and block SSRF attempts
🔍 How to Verify
Check if Vulnerable:
Check if ClipBucket version is earlier than 5.5.3 - #45 and if Remote Play feature is enabled.Check Version:
Check ClipBucket configuration files or admin panel for version informationVerify Fix Applied:
Attempt to create a video entry with an internal URL (like http://127.0.0.1) and verify it's rejected.📡 Detection & Monitoring
Log Indicators:
- Unusual video creation patterns
- Multiple failed attempts with internal URLs
- Video entries with suspicious hostnames
Network Indicators:
- Outbound HTTP requests from ClipBucket server to internal IP ranges
- Unusual port scanning patterns from the application server
SIEM Query:
source="clipbucket.log" AND ("remote_play" OR "external_url") AND (dst_ip=10.0.0.0/8 OR dst_ip=172.16.0.0/12 OR dst_ip=192.168.0.0/16 OR dst_ip=127.0.0.0/8)