{"id":"CVE-2026-1181","url":"https://www.cyber-defence.io/tools/cve/CVE-2026-1181","generatedAt":"2026-10-28T09:27:41.602Z","title":"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.","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.","published":"2026-01-19T13:16:21.000Z","lastModified":"2026-06-17T10:15:17.000Z","status":"Deferred","sourceIdentifier":"4760f414-e1ae-4ff1-bdad-c7a9c3538b79","cvss":{"version":"3.1","score":9,"severity":"CRITICAL","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H"},"cwe":["CWE-284","CWE-942"],"affected":[],"epss":{"score":0.0035,"percentile":0.2847,"date":"2026-10-27","history":[]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"high","text":"High impact if exploited, but EPSS currently rates exploitation as unlikely (0.35%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit."},"changes":[],"references":[{"url":"https://www.altium.com/platform/security-compliance/security-advisories","source":"4760f414-e1ae-4ff1-bdad-c7a9c3538b79"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-1181","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}