CVE-2026-9102
A path traversal flaw in Altium Enterprise Server’s ComparisonService lets an authenticated workspace user supply a crafted filename in a Gerber file upload to escape the temporary upload directory and write files anywhere on the server. This missing filename sanitization can be used to overwrite application files or execute code as the service account.
No official fix yet. If none appears within 45 days of first tracking, this entry is removed automatically.
Who is affected
Altium Enterprise Server ComparisonService (any version) – users with authenticated workspace access.
Real-world impact
An attacker can place arbitrary files on the server, potentially replacing binaries or configuration files, leading to remote code execution, service takeover, or denial of service.
Why this severity
The CVSS score of 9.4 reflects the vulnerability’s low attack complexity, no user interaction required, and its high impact on confidentiality, integrity, and availability, allowing an attacker to write files anywhere on the system.
What to do about it
No official fix or mitigation is documented in the sources yet. Monitor the vendor advisory and apply the patch as soon as it is released.
No fix documented in sources
Timeline
- May 20, 2026 · May 20, 2026PublishedDisclosed and added to the National Vulnerability Database.
- Jul 23, 2026 · 12d agoAdvisory updatedThe NVD record was last revised.