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.

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History

Wed, 20 May 2026 20:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}


Wed, 20 May 2026 19:30:00 +0000

Type Values Removed Values Added
Description 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.
Title Path Traversal in Altium Enterprise Server ComparisonService Allows Arbitrary File Write
Weaknesses CWE-22
CWE-434
References
Metrics cvssV4_0

{'score': 9.4, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H'}


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cve-icon MITRE

Status: PUBLISHED

Assigner: Altium

Published:

Updated: 2026-05-20T19:30:23.892Z

Reserved: 2026-05-20T16:06:24.984Z

Link: CVE-2026-9102

cve-icon Vulnrichment

Updated: 2026-05-20T19:29:45.536Z

cve-icon NVD

Status : Received

Published: 2026-05-20T20:16:41.513

Modified: 2026-05-20T20:16:41.513

Link: CVE-2026-9102

cve-icon Redhat

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cve-icon OpenCVE Enrichment

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Weaknesses