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CVE-2026-11431— Path Traversal in Altium Projects Service Allows Arbitrary File Read

AI Predicted 7.4 Difficulty: Easy EPSS 0.04% · P13

Affected Version Matrix 2

VendorProductVersion RangeStatus
AltiumAltium 365unspecifiedaffected
AltiumAltium Enterprise Server< 8.1.1affected
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I. Basic Information for CVE-2026-11431

Vulnerability Information
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Vulnerability Title
Path Traversal in Altium Projects Service Allows Arbitrary File Read
Source: NVD (National Vulnerability Database)
Vulnerability Description
A path traversal vulnerability exists in the Projects Service download endpoint shared by Altium Enterprise Server and Altium 365. An authenticated user can supply a crafted path parameter that bypasses validation, allowing arbitrary files (including entire directories returned as archives) to be read from the server filesystem. Because the readable files include service configuration and credential material, exploitation can be used to gather information enabling further compromise. The issue can be combined with CVE-2026-11424 to reach the cloud-side endpoint. On multi-tenant Altium 365 deployments, the readable configuration could have exposed credentials shared across services. Altium Enterprise Server is fixed in 8.1.1; the issue has been remediated in Altium 365 at the service level.
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
对路径名的限制不恰当(路径遍历)
Source: NVD (National Vulnerability Database)

Affected Products

VendorProductAffected VersionsCPESubscribe
AltiumAltium Enterprise Server 0 ~ 8.1.1 -
AltiumAltium 365 unspecified -

II. Public POCs for CVE-2026-11431

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III. Intelligence Information for CVE-2026-11431

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Same Patch Batch · Altium · 2026-06-05 · 7 CVEs total

CVE-2026-11420Path Traversal in Altium Enterprise Server NIS Allows Unauthenticated Arbitrary File Write
CVE-2026-11429Path Traversal in Altium Vault ScriptsController Allows Unauthenticated Remote Code Execut
CVE-2026-11423Path Traversal in Altium Enterprise Server Collaboration Service Allows Privilege Escalati
CVE-2026-11414Unauthenticated File Exfiltration in Altium Enterprise Server Vault Service via Hard-coded
CVE-2026-11424Server-Side Request Forgery in Altium Platform Design GraphQL Service Allows Information D
CVE-2026-11419Path Traversal in Altium Enterprise Server Vault UploadController Allows Arbitrary File Wr

IV. Related Vulnerabilities

Same product: Altium Enterprise Server
Same vendor: Altium
Same weakness: CWE-22

V. Comments for CVE-2026-11431

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