CVE-2026-9129: Path Traversal in Altium Enterprise Server Viewer StorageController Allows Arbitrary File Read
A path traversal vulnerability exists in the Altium Enterprise Server Viewer StorageController due to improper handling of file path route parameters. On on-premise deployments that use local filesystem storage, a regular authenticated user can supply a URL-encoded absolute path (such as an encoded drive letter) in a Viewer storage API request, causing the configured storage root to be discarded and allowing arbitrary files to be read from the server filesystem.
Because the readable files include the server's master configuration, which stores database credentials, signing key locations, certificate passwords, and OAuth secrets, exploitation can lead to disclosure of all server secrets and full compromise of the server and its data. Cloud deployments are not affected, as they use object storage and do not enable this component.
Affected Software
Event History
Frequently Asked Questions
What is the severity of CVE-2026-9129?
CVE-2026-9129 has been assigned a high severity rating due to its potential for arbitrary file read vulnerabilities.
How do I fix CVE-2026-9129?
To fix CVE-2026-9129, ensure that your Altium Enterprise Server is updated to the latest version that addresses this vulnerability.
Who is affected by CVE-2026-9129?
CVE-2026-9129 affects on-premise deployments of Altium Enterprise Server that utilize local filesystem storage.
What type of vulnerability is CVE-2026-9129?
CVE-2026-9129 is classified as a path traversal vulnerability, allowing unauthorized file access.
Can CVE-2026-9129 be exploited remotely?
CVE-2026-9129 does not require user interaction, making it possible for attackers to exploit it remotely in affected installations.