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CVE-2026-9152— Unauthenticated SOAP Endpoint in Altium 365 SearchService Allows Cross-Tenant Data Exfiltration and Index Destruction

Quick assessment

Affected
Altium Altium 365
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Altium 365是美国Altium公司的一个产品设计和开发平台。 Altium 365存在访问控制错误漏洞，该漏洞源于缺少身份验证，可能导致未经身份验证的攻击者读取、注入、修改或删除搜索索引条目。

AI Predicted 7.5 Difficulty: Easy EPSS 0.34% · P26

Affected Version Matrix 1

VendorProduct Version RangeStatus
Altium Altium 365 any affected
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I. Basic Information for CVE-2026-9152

Vulnerability Information
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Vulnerability Title
Unauthenticated SOAP Endpoint in Altium 365 SearchService Allows Cross-Tenant Data Exfiltration and Index Destruction
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
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
Source: CVE Program / CVE List V5
Vulnerability Type
关键功能的认证机制缺失
Source: CVE Program / CVE List V5
Vulnerability Title
Altium 365 访问控制错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Altium 365是美国Altium公司的一个产品设计和开发平台。 Altium 365存在访问控制错误漏洞，该漏洞源于缺少身份验证，可能导致未经身份验证的攻击者读取、注入、修改或删除搜索索引条目。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Altium Altium 365 - -

II. Public POCs for CVE-2026-9152

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III. Intelligence Information for CVE-2026-9152

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IV. Related Vulnerabilities

Same product: Altium 365
Same vendor: Altium
Same weakness: CWE-306

V. Comments for CVE-2026-9152

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