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TI-2026-07999 Aliases CVE-2026-9102GHSA-396j-87wm-36mh

Path Traversal in Altium Enterprise Server ComparisonService Allows Arbitrary File Write

Priority MEDIUM 43CWE-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 ComparisonService due to missing filename sanitization in the Gerber file upload APIs. A regular authenticated workspace user can supply a crafted filename in the multipart Content-Disposition header to escape the intended temporary upload directory and write arbitrary files to any location on the server filesystem. Because content-controlled files can be written to web-accessible directories, this can be escalated to remote code execution in the context of the service account. It can also be used to overwrite application binaries or configuration files, leading to service takeover or denial of service.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00563 47th percentileScored 2026-11-07
Fix Fixed Altium Enterprise Server (Altium): 8.0.4

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
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 8.0.48.0.4Patch availableCNA
  • Altium Enterprise Server VendorAltium Affected before 8.0.4 Fixed in 8.0.4 Patch available CNA

CPE names Threatist (inferred) · 1

Inferred from how NVD named this product before; not given by a source.

CPEVersionsRoleVendor
cpe:2.3:a:altium:on-prem_enterprise_server:*:*:*:*:*:*:*:*——Altium
  • cpe:2.3:a:altium:on-prem_enterprise_server:*:*:*:*:*:*:*:* Versions — — ·Altium

Remediation

  • Fix · CNA Altium Enterprise Server (Altium) Fixed in 8.0.4

Fixed in the same release

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

  • Release ·

    Altium Enterprise Server 8.0.4

    2 records Highest priority Priority MEDIUM 2 MEDIUM

    Other records, highest priority first

    • TI-2026-08026 Path Traversal in Altium Enterprise Server Viewer StorageController Allows Arbitrary File ReadPriority MEDIUM 42
    Show all 2 records →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-9102
  2. 2026-10-03 Alias added: GHSA-396j-87wm-36mh
  3. 2026-10-25 EPSS moved to the below the 50th percentile

References

Other 1

  • TI-2026-09862 Path Traversal in Altium Vault ScriptsController Allows Unauthenticated Remote Code Execution CVSS 4.0CRITICAL 10.0
  • TI-2026-62547 Server-Side Request Forgery in Altium Enterprise Server UnifiedLogin Service Allows Unauthenticated System Compromise CVSS 4.0CRITICAL 10.0
  • 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-2026-09851 Path traversal in Altium Enterprise Server CVSS 4.0CRITICAL 10.0
  • TI-2026-08047 Unauthenticated SOAP Endpoint in Altium 365 SearchService Allows Cross-Tenant Data Exfiltration and Index Destruction CVSS 4.0CRITICAL 10.0
See all 21 →

Sources

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