{"apiVersion":"1.0","identifier":"CVE-2026-63640","description":"MagicMirror² is an open source modular smart mirror platform. Prior to 2.37.0, when hideConfigSecrets is enabled, the catch-all socket dispatcher in js/node_helper.js passes every inbound object payload through replaceSecretPlaceholder in js/server_functions.js before invoking socketNotificationReceived. A client connected to a loaded module namespace can submit a SECRET_API_KEY placeholder, causing the server to replace it with the corresponding process environment value. The default weather helper accepts INIT_WEATHER, copies the attacker-controlled instanceId, and returns it in WEATHER_ERROR, providing an echo path for the expanded secret. This reverses the intended one-way redaction boundary and can disclose API tokens, credentials, or service keys stored in SECRET_ variables. This issue is fixed in version 2.37.0.","publishedAt":"2026-08-18T18:19:11","lastModifiedAt":"2026-08-18T18:19:11","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-63640","cvssScore":4.3,"cvssVector":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N","epssProbability":0.00205,"riskScore":0.44,"affectedProduct":"MagicMirror2","affectedVersions":"<2.37.0","vulnerabilityType":"Web app","operatingSystems":[],"links":{"self":"https://www.redsauce.net/api/cves/CVE-2026-63640","webPages":{"es":"https://www.redsauce.net/es/cves/CVE-2026-63640","en":"https://www.redsauce.net/en/cves/CVE-2026-63640","fr":"https://www.redsauce.net/fr/cves/CVE-2026-63640","pt":"https://www.redsauce.net/pt/cves/CVE-2026-63640","de":"https://www.redsauce.net/de/cves/CVE-2026-63640","sk":"https://www.redsauce.net/sk/cves/CVE-2026-63640","el":"https://www.redsauce.net/el/cves/CVE-2026-63640"},"source":"https://nvd.nist.gov/vuln/detail/CVE-2026-63640"}}