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TI-2026-09854 Aliases CVE-2026-11419GHSA-6hrc-72jv-9cp2

Path Traversal in Altium Enterprise Server Vault UploadController Allows Arbitrary File Write

Priority MEDIUM 49CWE-22Published · Updated

Key facts

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

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-434.

Summary

A path traversal vulnerability exists in the 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. Because content-controlled files can be written to web-accessible directories, or used to overwrite application binaries or configuration files, this can be escalated to remote code execution, service takeover, or denial of service. Altium 365 cloud deployments are not affected, as the affected endpoint is not reachable and the cloud storage architecture mitigates the file-write primitive.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00548 46th 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-2026-09851 Path traversal in Altium Enterprise ServerPriority MEDIUM 49
    Show all 7 records →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-11419
  2. 2026-10-03 Alias added: GHSA-6hrc-72jv-9cp2

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-2026-09851 Path traversal in Altium Enterprise Server CVSS 4.0CRITICAL 10.0
  • 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