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CVE-2026-9152: Altium 365 SearchService: Unauthenticated Access to Search Data

CVE-2026-9152

Summary

A security issue exists in Altium 365's SearchService, allowing an attacker to access and modify search results without needing a login. This could reveal sensitive information and affect search results. If you use Altium 365, update to the latest version to fix this issue.

Original title

Original 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.

nvd CVSS4.0 10.0

Vulnerability type

CWE-306 Missing Authentication for Critical Function

CWE-639 Authorization Bypass Through User-Controlled Key

https://www.altium.com/platform/security-compliance/security-advisories

Published: 21 May 2026 · Updated: 28 May 2026 · First seen: 21 May 2026