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TI-2026-09851 Aliases CVE-2026-11414GHSA-q7h9-qxg9-hrm3

Path traversal in Altium Enterprise Server

Priority MEDIUM 49CWE-22Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Attack requirements
None
Impact type
Security bypass
Confidentiality · integrity · availability
High · High · High
Fix status
Fixed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-798.

Summary

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.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00478 41st percentileScored 2026-11-07
Fix Fixed Altium Enterprise Server (Altium): 8.1.1

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
Yes
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
AltiumAltium Enterprise Serverbefore 8.1.18.1.1Patch availableCNA
  • Altium Enterprise Server VendorAltium Affected before 8.1.1 Fixed in 8.1.1 Patch available CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:altium:on-prem_enterprise_server:*:*:*:*:*:*:*:*before 8.1.1VulnerableAltium
  • cpe:2.3:a:altium:on-prem_enterprise_server:*:*:*:*:*:*:*:* Versions before 8.1.1 Vulnerable ·Altium

Remediation

  • Fix · CNA Altium Enterprise Server (Altium) Fixed in 8.1.1

Fixed in the same release

Records fixed by the same vendor advisory or release, as the CNA lists them.

  • Release ·

    Altium Enterprise Server 8.1.1

    7 records Highest priority Priority MEDIUM 6 MEDIUM, 1 LOW

    Other records, highest priority first

    • TI-2026-09862 Path Traversal in Altium Vault ScriptsController Allows Unauthenticated Remote Code ExecutionPriority MEDIUM 51
    • TI-2026-09855 Path Traversal in Altium Enterprise Server NIS Allows Unauthenticated Arbitrary File Write and File ReadPriority MEDIUM 50
    • TI-2026-09854 Path Traversal in Altium Enterprise Server Vault UploadController Allows Arbitrary File WritePriority MEDIUM 49
    Show all 7 records →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-11414
  2. 2026-10-03 Alias added: GHSA-q7h9-qxg9-hrm3

References

Advisory 1

  • TI-2026-09855 Path Traversal in Altium Enterprise Server NIS Allows Unauthenticated Arbitrary File Write and File Read CVSS 4.0CRITICAL 10.0
  • TI-2026-09854 Path Traversal in Altium Enterprise Server Vault UploadController Allows Arbitrary File Write CVSS 4.0CRITICAL 9.4
  • TI-2025-20220 SQL Injection in AES Due to Inactive SQL Parsing Configuration CVSS 3.1CRITICAL 9.8
  • TI-2026-00763 Stored Cross-Site Scripting in Altium Enterprise Server Workflow Engine Allows Privilege Escalation CVSS 3.1HIGH 8.0
  • TI-2025-20222 HTML Injection Leading to Script Execution in Altium Enterprise Server CVSS 3.1HIGH 7.6
  • TI-2025-20221 Stored Cross-Site Scripting in AES BOM Viewer CVSS 3.1MEDIUM 6.8

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences