CVE-2026-1181
📋 TL;DR
Altium 365 workspace endpoints have an overly permissive CORS policy that allows credentialed cross-origin requests from other Altium-controlled subdomains. This enables JavaScript on those origins to access authenticated workspace APIs as logged-in users, potentially leading to unauthorized data access and administrative actions. All Altium 365 workspace users are affected.
💻 Affected Systems
- Altium 365 Workspace
⚠️ Manual Verification Required
This CVE does not have specific version information in our database, so automatic vulnerability detection cannot determine if your system is affected.
Why? The CVE database entry doesn't specify which versions are vulnerable (no version ranges provided by the vendor/NVD).
🔒 Custom verification scripts are available for registered users. Sign up free to download automated test scripts.
- Review the CVE details at NVD
- Check vendor security advisories for your specific version
- Test if the vulnerability is exploitable in your environment
- Consider updating to the latest version as a precaution
⚠️ Risk & Real-World Impact
Worst Case
Complete compromise of workspace data, unauthorized administrative actions, bypass of IP allowlisting controls including in GovCloud environments, and potential lateral movement through chained vulnerabilities.
Likely Case
Unauthorized access to sensitive workspace data and potential privilege escalation through chained vulnerabilities in external Altium applications.
If Mitigated
Limited impact if proper network segmentation, IP allowlisting, and monitoring are in place, though the vulnerability still exists.
🎯 Exploit Status
Requires chaining with vulnerabilities in external Altium applications (like forum.live.altium.com) and user authentication to the workspace.
🛠️ 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: No
Instructions:
1. Review the Altium security advisory. 2. Apply the recommended patch or update to the fixed version. 3. Verify the CORS policy has been tightened to restrict cross-origin requests appropriately.
🔧 Temporary Workarounds
Restrict Access to Altium Subdomains
allBlock or restrict access to known vulnerable Altium subdomains (e.g., forum.live.altium.com) at the network level to prevent exploitation.
Enhance Monitoring
allIncrease monitoring of cross-origin requests to Altium 365 workspace endpoints and look for suspicious activity from Altium subdomains.
🧯 If You Can't Patch
- Implement strict network segmentation to isolate Altium 365 workspace from other Altium subdomains.
- Enforce strong authentication and session management controls to limit the impact of potential credential theft.
🔍 How to Verify
Check if Vulnerable:
Test CORS policy on Altium 365 workspace endpoints by attempting credentialed cross-origin requests from other Altium subdomains (e.g., via browser developer tools or custom scripts).Check Version:
Check Altium 365 workspace version via the platform's admin interface or contact Altium support.Verify Fix Applied:
After patching, retest CORS policy to ensure cross-origin requests from unauthorized origins are blocked and only allowed from explicitly permitted domains.📡 Detection & Monitoring
Log Indicators:
- Unusual cross-origin requests to workspace APIs from Altium subdomains
- Failed authentication attempts followed by successful API access from different origins
Network Indicators:
- HTTP requests with Origin headers pointing to Altium subdomains accessing workspace endpoints
- Unexpected API calls from forum.live.altium.com or similar domains
SIEM Query:
source_ip IN (altium_subdomain_ips) AND dest_ip = (altium_workspace_ip) AND http_method IN (POST, GET, PUT, DELETE) AND status_code = 200