Description
A path traversal vulnerability exists in the Altium Enterprise Server Collaboration Service due to improper handling of user-supplied filenames in the MCAD and Simulation file download flows. A regular authenticated user can submit a collaboration message containing a crafted filename, which is later used to construct the download path on the server without validation, allowing arbitrary files to be read from the server filesystem.




Because the readable files include the server's master configuration, which stores credentials for privileged accounts, exploitation can lead to authenticating as a system administrator and gaining full control of the server. Altium 365 cloud deployments are not affected.
Published: 2026-06-05
Score: 9.4 Critical
EPSS: < 1% Very Low
KEV: No
Impact: n/a
Action: n/a
AI Analysis

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Remediation

No vendor fix or workaround currently provided.

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Tracking

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History

Mon, 08 Jun 2026 13:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

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


Sun, 07 Jun 2026 11:30:00 +0000

Type Values Removed Values Added
First Time appeared Altium
Altium enterprise Server
Vendors & Products Altium
Altium enterprise Server

Fri, 05 Jun 2026 21:00:00 +0000

Type Values Removed Values Added
Description A path traversal vulnerability exists in the Altium Enterprise Server Collaboration Service due to improper handling of user-supplied filenames in the MCAD and Simulation file download flows. A regular authenticated user can submit a collaboration message containing a crafted filename, which is later used to construct the download path on the server without validation, allowing arbitrary files to be read from the server filesystem. Because the readable files include the server's master configuration, which stores credentials for privileged accounts, exploitation can lead to authenticating as a system administrator and gaining full control of the server. Altium 365 cloud deployments are not affected.
Title Path Traversal in Altium Enterprise Server Collaboration Service Allows Privilege Escalation
Weaknesses CWE-22
CWE-269
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'}


Subscriptions

Altium Enterprise Server
cve-icon MITRE

Status: PUBLISHED

Assigner: Altium

Published:

Updated: 2026-06-08T13:10:31.368Z

Reserved: 2026-06-05T20:07:07.335Z

Link: CVE-2026-11423

cve-icon Vulnrichment

Updated: 2026-06-08T13:10:27.675Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2026-06-05T21:16:29.353

Modified: 2026-06-08T15:00:38.710

Link: CVE-2026-11423

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-06-07T11:15:45Z

Weaknesses