{"id":"CVE-2026-1181","state":"PUBLISHED","title":"Altium 365 Over-Permissive CORS Configuration Allows Credentialed Cross-Origin Workspace Access","description":"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.","publishedAt":"2026-01-19T12:00:10.265Z","updatedAt":"2026-01-26T21:20:18.423Z","severity":{"score":9,"label":"Critical","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H","source":"Altium"},"assigner":"Altium","products":["Altium Altium 365"],"affected":[{"vendor":"Altium","product":"Altium 365","defaultStatus":"affected","versions":[{"version":"unspecified","status":"affected","versionType":"semver"}],"modules":["Workspace API"],"platforms":["Web"]}],"references":["https://www.altium.com/platform/security-compliance/security-advisories"],"weaknesses":["CWE-942","CWE-284"],"ingestedAt":"2026-10-29T20:11:10.572Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/1xxx/CVE-2026-1181.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-1181","state":"PUBLISHED","datePublished":"2026-01-19T12:00:10.265Z","dateUpdated":"2026-01-26T21:20:18.423Z","assignerShortName":"Altium","assignerOrgId":"4760f414-e1ae-4ff1-bdad-c7a9c3538b79","dateReserved":"2026-01-19T11:47:00.514Z"},"containers":{"cna":{"title":"Altium 365 Over-Permissive CORS Configuration Allows Credentialed Cross-Origin Workspace Access","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."}],"affected":[{"vendor":"Altium","product":"Altium 365","defaultStatus":"affected","versions":[{"version":"unspecified","status":"affected","versionType":"semver"}],"modules":["Workspace API"],"platforms":["Web"]}],"references":[{"url":"https://www.altium.com/platform/security-compliance/security-advisories"}],"metrics":[{"cvssV3_1":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"HIGH","baseScore":9,"baseSeverity":"CRITICAL","confidentialityImpact":"HIGH","integrityImpact":"HIGH","privilegesRequired":"LOW","scope":"CHANGED","userInteraction":"REQUIRED","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H","version":"3.1"},"format":"CVSS","scenarios":[{"lang":"en","value":"GENERAL"}]}],"problemTypes":[{"descriptions":[{"cweId":"CWE-942","description":"CWE-942 – Permissive Cross-domain Policy with Untrusted Domains","lang":"en","type":"CWE"}]},{"descriptions":[{"cweId":"CWE-284","description":"CWE-284 Improper Access Control","lang":"en","type":"CWE"}]}],"providerMetadata":{"shortName":"Altium","orgId":"4760f414-e1ae-4ff1-bdad-c7a9c3538b79","dateUpdated":"2026-01-26T21:20:18.423Z"},"datePublic":"2026-01-15T22:48:00.000Z","impacts":[{"capecId":"CAPEC-122","descriptions":[{"lang":"en","value":"CAPEC-122 Privilege Abuse"}]},{"capecId":"CAPEC-17","descriptions":[{"lang":"en","value":"CAPEC-17 Accessing, Modifying, or Executing Executable Files"}]},{"capecId":"CAPEC-233","descriptions":[{"lang":"en","value":"CAPEC-233 Privilege Escalation via Trust Boundary Violation"}]}],"source":{"discovery":"UNKNOWN"},"x_generator":{"engine":"Vulnogram 0.5.0"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-01-20T21:29:36.260341Z","id":"CVE-2026-1181","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"total"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-01-20T21:29:42.528Z"}}]}}}