Altium Altium 365 up to 8.1.0 Git Service path traversal

Summaryinfo

A vulnerability described as critical has been identified in Altium Altium 365 up to 8.1.0. Affected by this vulnerability is an unknown functionality of the component Git Service. Such manipulation leads to path traversal. This vulnerability is documented as CVE-2026-14439. The attack can be executed remotely. There is not any exploit available. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability, which was classified as critical, has been found in Altium Altium 365 up to 8.1.0. Affected by this issue is an unknown code block of the component Git Service. The manipulation with an unknown input leads to a path traversal vulnerability. Using CWE to declare the problem leads to CWE-22. The product uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the product does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory. Impacted is confidentiality, integrity, and availability. CVE summarizes:

A path traversal vulnerability exists in the Git Service component shared by Altium Enterprise Server and Altium 365. The service accepts a sequence of post-clone file-manipulation operations that use user-supplied paths without validation, allowing an authenticated user with basic git access to move arbitrary files outside the intended repository area. This file-move primitive can be used to place attacker-controlled script content into directories where it is later executed by the service, resulting in remote code execution under the Git Service account. On multi-tenant Altium 365 deployments, this could have allowed access to data belonging to other tenants on the same infrastructure node. Altium Enterprise Server is fixed in 8.1.1. The issue has been remediated across Altium 365 shared multi-tenant deployments at the service level; remediation is in progress on remaining Altium 365 deployments.

The weakness was released by Joris Aerts with Tesla. The advisory is shared for download at altium.com. This vulnerability is handled as CVE-2026-14439 since 07/02/2026. The exploitation is known to be easy. The attack may be launched remotely. There are neither technical details nor an exploit publicly available. The MITRE ATT&CK project declares the attack technique as T1006.

Upgrading to version 8.1.1 eliminates this vulnerability.

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Productinfo

Vendor

• Altium

Name

• Altium 365

Version

• 8.0
• 8.1.0

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CPE 2.2info

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