CVE-2026-9152
Missing Authentication in Altium 365 SearchService
Publication date: 2026-05-21
Last updated on: 2026-05-21
Assigner: Altium
Description
Description
CVSS Scores
EPSS Scores
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Meta Information
Affected Vendors & Products
| Vendor | Product | Version / Range |
|---|---|---|
| altium | 365 | * |
Helpful Resources
Exploitability
| CWE ID | Description |
|---|---|
| CWE-639 | The system's authorization functionality does not prevent one user from gaining access to another user's data or record by modifying the key value identifying the data. |
| CWE-306 | The product does not perform any authentication for functionality that requires a provable user identity or consumes a significant amount of resources. |
Attack-Flow Graph
AI Powered Q&A
Can you explain this vulnerability to me?
This vulnerability is a missing authentication issue in the Altium 365 SearchService. A legacy SOAP endpoint allows access to search index operations without requiring any authentication, session tokens, or identity verification.
An unauthenticated attacker who knows a target workspace's identifier can interact with that workspace's search index, crossing tenant boundaries.
Exploitation allows the attacker to read indexed contents such as component data, project and folder names, and user metadata, as well as inject, modify, or delete search index entries. These changes affect only the search index, not the underlying vault data.
This can disclose sensitive workspace information and compromise the integrity and availability of search results. The vulnerability affects Altium 365 cloud deployments but not on-premise Altium Enterprise Server.
How can this vulnerability impact me? :
The vulnerability can lead to unauthorized disclosure of sensitive workspace information, including component data, project and folder names, and user metadata.
It can also compromise the integrity and availability of search results by allowing an attacker to inject, modify, or delete search index entries.
Although the underlying vault data is not affected, the manipulation of search indexes can disrupt normal operations and trust in the search functionality.
Since the vulnerability allows crossing tenant boundaries, it poses a risk to multiple users and workspaces within the Altium 365 cloud environment.
What immediate steps should I take to mitigate this vulnerability?
The vulnerability affects Altium 365 cloud deployments due to a legacy SOAP endpoint that exposes search index operations without authentication. Immediate mitigation steps include restricting or disabling access to the legacy SOAP endpoint if possible, monitoring for unauthorized access attempts to the search service, and applying any security updates or patches provided by Altium.
Since on-premise Altium Enterprise Server is not affected, consider isolating or migrating sensitive workloads to on-premise environments if feasible until a fix is applied.
Refer to Altium's official security advisories page for the latest updates and recommended actions.
How does this vulnerability affect compliance with common standards and regulations (like GDPR, HIPAA)?:
The vulnerability allows unauthenticated attackers to access and manipulate search index data across tenant boundaries, potentially exposing sensitive workspace information such as component data, project and folder names, and user metadata.
Although the underlying vault data is not affected, the disclosure of sensitive workspace information and compromise of data integrity and availability could lead to non-compliance with data protection regulations like GDPR and HIPAA, which require safeguarding personal and sensitive information against unauthorized access.
Therefore, exploitation of this vulnerability may result in violations of confidentiality, integrity, and availability principles mandated by such standards.