CVE-2025-62715
📋 TL;DR
ClipBucket v5 versions 5.5.2-#147 and below contain a stored XSS vulnerability in the Collection tags feature. Authenticated normal users can inject malicious JavaScript into tags, which executes in the browsers of all users viewing affected collection detail and tag-list pages. This affects all ClipBucket v5 installations running vulnerable versions.
💻 Affected Systems
- ClipBucket v5
📦 What is this software?
Clipbucket by Oxygenz
⚠️ Risk & Real-World Impact
Worst Case
Attackers could steal session cookies, perform account takeovers, redirect users to malicious sites, or deploy malware through the compromised web application.
Likely Case
Authenticated attackers inject malicious scripts to steal session cookies or credentials from other users, potentially gaining administrative access.
If Mitigated
With proper input validation and output encoding, the risk is limited to minor data integrity issues.
🎯 Exploit Status
Exploitation requires authenticated user access. The vulnerability is straightforward to exploit once authenticated.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 5.5.2-#152
Vendor Advisory: https://github.com/MacWarrior/clipbucket-v5/security/advisories/GHSA-h5f4-wj75-39x3
Restart Required: No
Instructions:
1. Backup your current installation. 2. Update to version 5.5.2-#152 or later. 3. Verify the fix by checking that tags are properly HTML-encoded in collection pages.
🔧 Temporary Workarounds
Disable Collection Tags Feature
allTemporarily disable the Collection tags feature to prevent exploitation.
Implement WAF Rules
allConfigure web application firewall to block HTML/JavaScript in tag parameters.
🧯 If You Can't Patch
- Implement strict input validation to sanitize all tag inputs
- Apply output encoding to all user-generated content displayed in collection pages
🔍 How to Verify
Check if Vulnerable:
Check if your ClipBucket version is 5.5.2-#147 or earlier. Test by creating a collection tag with HTML/JavaScript and viewing if it executes unescaped.Check Version:
Check the version in ClipBucket admin panel or review the software files for version indicators.Verify Fix Applied:
After updating to 5.5.2-#152 or later, test that HTML/JavaScript in tags is properly escaped and does not execute.📡 Detection & Monitoring
Log Indicators:
- Unusual tag creation patterns
- Multiple tag creations from single user in short time
Network Indicators:
- HTTP requests with suspicious content in tag parameters
SIEM Query:
Search for POST requests to collection tag endpoints containing script tags or JavaScript keywords.