{"id":"CVE-2026-63643","title":"MagicMirror² is an open source modular smart mirror platform","summary":"MagicMirror² is an open source modular smart mirror platform. Prior to 2.37.0, the ADD_CALENDAR handler in defaultmodules/calendar/node_helper.js accepts an attacker-controlled URL, authentication data, and selfSignedCert setting through…","severity":"medium","cwe":["CWE-441","CWE-918"],"vendor":"magicmirror","product":"magicmirror","affected":["magicmirror < 2.37.0"],"patched":["magicmirror 2.37.0"],"published":"2026-08-18","updated":"2026-09-08","sourceUpdated":"2026-09-08T21:02:26.047","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-63643","references":[{"url":"https://github.com/MagicMirrorOrg/MagicMirror/commit/58c2a5e675a7d367b64d72e1d35680d202ff5c9f","label":"security-advisories@github.com"},{"url":"https://github.com/MagicMirrorOrg/MagicMirror/pull/4169","label":"security-advisories@github.com"},{"url":"https://github.com/MagicMirrorOrg/MagicMirror/releases/tag/v2.37.0","label":"security-advisories@github.com"},{"url":"https://github.com/MagicMirrorOrg/MagicMirror/security/advisories/GHSA-w6x9-28jw-hq7j","label":"security-advisories@github.com"},{"url":"https://github.com/advisories/GHSA-w6x9-28jw-hq7j"}],"tags":["nvd","ghsa","npm"],"epss":0.00474,"epssPercentile":0.40047,"aliases":["GHSA-w6x9-28jw-hq7j"],"ecosystem":"npm","ingestedAt":"2026-08-18T18:21:29.846Z","slug":"CVE-2026-63643","body":"## Overview\n\nMagicMirror² is an open source modular smart mirror platform. Prior to 2.37.0, the ADD_CALENDAR handler in defaultmodules/calendar/node_helper.js accepts an attacker-controlled URL, authentication data, and selfSignedCert setting through the unauthenticated Socket.IO namespace /calendar. The handler passes these fields to CalendarFetcher, causing a server-side request without SSRF validation and optionally disabling TLS verification. When the response is valid iCal, CALENDAR_EVENTS returns parsed event data to the attacker, allowing internal-service response data to be exfiltrated; other responses still provide a blind request and timing primitive. This issue is fixed in version 2.37.0.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.\n\n## Package advisory (CVE-2026-63643)\n\nAffected packages:\n\n- `magicmirror < 2.37.0`\n\nPatched in:\n\n- `magicmirror 2.37.0`\n\nSource: https://github.com/advisories/GHSA-w6x9-28jw-hq7j","depth":"sunlit","depthScore":28,"depthScoreParts":{"impact":27.5,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}