CVE-2026-11414
CriticalCVSS 9.8Exploitation Probability (EPSS)
Low risk33th percentile - higher than 33% of all known CVEs
Summary
Altium Enterprise Server has a vulnerability related to the use of a hard-coded cryptographic key for signing file download URLs. This key is identical across all installations, allowing unauthenticated attackers to forge signatures and retrieve files from the Vault storage area without authentication.
Risk Assessment
This vulnerability allows unauthenticated attackers to access sensitive server configurations and key materials, potentially leading to full server compromise. The combination of this vulnerability with another, CVE-2026-9152, enables enumeration and bulk downloading of stored content.
Recommendation
It is recommended to update Altium Enterprise Server to the latest version to eliminate the hard-coded cryptographic key and secure file access. Additionally, monitoring and restricting access to the server should be implemented to minimize the risk of attacks.
Other vulnerabilities in Altium Enterprise Server
See all- CVE-2026-92808Critical
A server-side request forgery (SSRF) vulnerability exists in the UnifiedLogin service of Altium Enterprise Server. An unauthenticated network attacker can cause the server to issue outbound HTTP requests to a destination of the attacker's choosing, including internal services reachable only from the server. One such internal service exposes configuration and credential material without authentication, relying on local origin, which is satisfied by forged requests.
- CVE-2026-11429Critical
Two endpoints in the Vault Service ScriptsController, shared by Altium Enterprise Server and Altium 365, accept file uploads where a user-supplied filename is used to construct the destination path without validation, allowing arbitrary file writes. The write occurs before authentication, so no credentials are needed.
- CVE-2026-11423Critical
Path traversal vulnerability in Altium Enterprise Server Collaboration Service allows an authenticated user to read arbitrary files from the server filesystem via a crafted filename in a collaboration message. This can lead to exposure of configuration with passwords and full server compromise.
- CVE-2026-11420Critical
Two path traversal vulnerabilities in the Network Installation Service (NIS) of Altium Enterprise Server allow an unauthenticated network attacker to write arbitrary files to writable locations and read package archive files. No authentication is required.
- CVE-2026-9129Critical
Altium Enterprise Server Viewer has a path traversal vulnerability in the StorageController component. An authenticated user can read arbitrary files from the server filesystem, including the configuration file with database credentials and signing keys.
- CVE-2026-9102Critical
Altium Enterprise Server ComparisonService has a path traversal vulnerability in the Gerber file upload APIs. An authenticated workspace user can supply a crafted filename in the Content-Disposition header to write files outside the intended temporary directory, potentially leading to remote code execution.
- CVE-2026-11431High
A path traversal vulnerability in the Projects Service download endpoint of Altium Enterprise Server and Altium 365 allows an authenticated user to read arbitrary files (including entire directories as archives) from the server filesystem, potentially exposing configuration and credential data.
- CVE-2026-11424High
SSRF vulnerability in a GraphQL service component shared by Altium Enterprise Server and Altium 365. An authenticated user can submit a request that the server treats as a URL and issues an outbound HTTP GET without validation, returning the response to the attacker.
- CVE-2026-11419High
A path traversal vulnerability in Altium Enterprise Server Vault Service UploadController due to improper validation of a user-controlled path component in image upload requests. An authenticated user can supply a crafted absolute path so that the configured storage root is discarded, allowing arbitrary files to be written to any location on the server filesystem writable by the service account. This can be escalated to remote code execution, service takeover, or denial of service. Altium 365 cloud deployments are not affected.
Original NVD description (English source)
A hard-coded cryptographic key is used by Altium Enterprise Server to sign file download URLs in the Vault service. Because the key is identical across all installations, an unauthenticated network attacker who can reach the server can forge valid download signatures and retrieve files from the Vault storage area without any authentication, session, or credentials. A separate path traversal vulnerability in the same download endpoint allows the configured storage root to be escaped, enabling reads of arbitrary files on the server filesystem. Combined, these issues allow an unauthenticated attacker to obtain sensitive server configuration and key material, which can lead to full server compromise. The vulnerability can be chained with CVE-2026-9152 to enumerate and bulk-download stored content. Altium 365 cloud deployments are not impacted in practice, as file storage uses object storage rather than the local filesystem.
Vulnerability data from NVD (NIST) · CISA KEV · EPSS