CVE-2026-1010
📋 TL;DR
A stored XSS vulnerability in Altium Workflow Engine allows authenticated users to inject malicious JavaScript into workflow data. When administrators view compromised workflows, the script executes in their browser context, enabling privilege escalation and administrative actions. This affects all Altium users with workflow access.
💻 Affected Systems
- Altium Workflow Engine
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Complete system compromise: attackers create new admin accounts, steal session tokens, execute arbitrary administrative commands, and potentially pivot to other systems.
Likely Case
Privilege escalation leading to unauthorized administrative access, data theft, and workflow manipulation.
If Mitigated
Limited impact if proper input validation and output encoding are implemented, with admin accounts protected by MFA.
🎯 Exploit Status
Exploitation requires authenticated user access but uses simple JavaScript injection techniques.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Check vendor advisory for specific version
Vendor Advisory: https://www.altium.com/platform/security-compliance/security-advisories
Restart Required: Yes
Instructions:
1. Review vendor advisory for patch version. 2. Backup workflow data. 3. Apply patch from vendor. 4. Restart Altium services. 5. Verify fix implementation.
🔧 Temporary Workarounds
Input Validation Filter
allImplement server-side input sanitization for workflow form submissions
Implement input validation in workflow submission APIs to strip/escape JavaScript tags
Content Security Policy
allImplement CSP headers to restrict script execution
Add Content-Security-Policy header with script-src directives
🧯 If You Can't Patch
- Restrict workflow creation/modification permissions to trusted users only
- Implement web application firewall rules to detect and block XSS payloads
🔍 How to Verify
Check if Vulnerable:
Test workflow form submission with XSS payloads like <script>alert('test')</script> and check if script executes when viewedCheck Version:
Check Altium version via admin console or system information panelVerify Fix Applied:
Attempt same XSS payloads after patch; scripts should be properly sanitized and not execute📡 Detection & Monitoring
Log Indicators:
- Unusual workflow modifications
- JavaScript patterns in workflow data submissions
- Multiple failed admin login attempts after workflow views
Network Indicators:
- HTTP requests with JavaScript payloads in workflow parameters
- Unusual outbound connections from admin workstations
SIEM Query:
source="altium_logs" AND (message="*<script>*" OR message="*javascript:*")