Cloudanix VulnDB

CVE-2026-1181

Critical · 9.0

CVSS

9.0

EPSS

0.4%

Published

Jan 19, 2026

CISA due date

—

The record

Altium 365 workspace endpoints were configured with an overly permissive Cross-Origin Resource Sharing (CORS) policy that allowed credentialed cross-origin requests from other Altium-controlled subdomains, including forum.live.altium.com. As a result, JavaScript executing on those origins could access authenticated workspace APIs in the context of a logged-in user. When chained with vulnerabilities in those external applications, this misconfiguration enables unauthorized access to workspace data, administrative actions, and bypass of IP allowlisting controls, including in GovCloud environments.

Affected packages

Ecosystem Package Introduced Fixed

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