CVE-2026-1181

{"id": "CVE-2026-1181", "cveTags": [], "metrics": {"cvssMetricV31": [{"type": "Secondary", "source": "4760f414-e1ae-4ff1-bdad-c7a9c3538b79", "cvssData": {"scope": "CHANGED", "version": "3.1", "baseScore": 9.0, "attackVector": "NETWORK", "baseSeverity": "CRITICAL", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H", "integrityImpact": "HIGH", "userInteraction": "REQUIRED", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "LOW", "confidentialityImpact": "HIGH"}, "impactScore": 6.0, "exploitabilityScore": 2.3}]}, "published": "2026-01-19T13:16:20.543", "references": [{"url": "https://www.altium.com/platform/security-compliance/security-advisories", "source": "4760f414-e1ae-4ff1-bdad-c7a9c3538b79"}], "vulnStatus": "Awaiting Analysis", "weaknesses": [{"type": "Secondary", "source": "4760f414-e1ae-4ff1-bdad-c7a9c3538b79", "description": [{"lang": "en", "value": "CWE-284"}, {"lang": "en", "value": "CWE-942"}]}], "descriptions": [{"lang": "en", "value": "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."}], "lastModified": "2026-01-26T15:05:39.840", "sourceIdentifier": "4760f414-e1ae-4ff1-bdad-c7a9c3538b79"}