Vulnerability Report

CVE-2026-9152

Title: Missing authentication in Altium 365 SearchService

Auth Bypass

Proof Of Concept

No public PoC currently indexed for CVE-2026-9152.

CWE Category CWE-306

Published Date May 21, 2026

Modified Date Jul 23, 2026

Exploit Status Not Found

Score 10.0 CVSS v4.0

Exploit Probability (EPSS)

0.34%

Vulnerability Summary

CVE-2026-9152: 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.

Impacted Vendors

Analysis in Progress...

Reference Links

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

CVSS v4.0

Source Entity 4760f414-e1ae-4ff1-bdad-c7a9c3538b79

Severity CRITICAL

10.0

Attack Vector

NETWORK

Complexity

LOW

Privileges

N/A

Interaction

NONE

Confidentiality

N/A

Integrity

N/A

Availability

N/A

Scope

N/A

RAW 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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Associated Attack Patterns (CAPEC)

Total: Patterns