A missing authentication vulnerability exists in the Altium 365 SearchService. A legacy SOAP endpoint exposes search index operations without requiring authentication, session tokens, or any form of identity verification. An unauthenticated network attacker who can reference a target workspace's identifier can interact with that workspace's search index, crossing tenant boundaries.




Successful exploitation allows reading a workspace's indexed contents (such as component data, project and folder names, and user metadata) and injecting, modifying, or deleting search index entries. These operations affect the search index only, not the underlying vault data, but they can disclose sensitive workspace information and compromise the integrity and availability of search results. Altium 365 cloud deployments are affected; on-premise Altium Enterprise Server is not affected.

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Solution

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History

Thu, 21 May 2026 13:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}


Thu, 21 May 2026 02:45:00 +0000

Type Values Removed Values Added
First Time appeared Altium
Altium altium 365
Vendors & Products Altium
Altium altium 365

Thu, 21 May 2026 01:30:00 +0000

Type Values Removed Values Added
Description A missing authentication vulnerability exists in the Altium 365 SearchService. A legacy SOAP endpoint exposes search index operations without requiring authentication, session tokens, or any form of identity verification. An unauthenticated network attacker who can reference a target workspace's identifier can interact with that workspace's search index, crossing tenant boundaries. Successful exploitation allows reading a workspace's indexed contents (such as component data, project and folder names, and user metadata) and injecting, modifying, or deleting search index entries. These operations affect the search index only, not the underlying vault data, but they can disclose sensitive workspace information and compromise the integrity and availability of search results. Altium 365 cloud deployments are affected; on-premise Altium Enterprise Server is not affected.
Title Unauthenticated SOAP Endpoint in Altium 365 SearchService Allows Cross-Tenant Data Exfiltration and Index Destruction
Weaknesses CWE-306
CWE-639
References
Metrics cvssV4_0

{'score': 10, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:N/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: 2026-05-21T12:41:39.633Z

Reserved: 2026-05-20T23:26:29.928Z

Link: CVE-2026-9152

cve-icon Vulnrichment

Updated: 2026-05-21T12:41:36.028Z

cve-icon NVD

Status : Deferred

Published: 2026-05-21T02:16:33.943

Modified: 2026-05-21T15:24:25.330

Link: CVE-2026-9152

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-05-21T02:30:45Z

Weaknesses