CVE-2026-63640
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.
- CVSS 3.1
- 4.3
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N - EPSS
- 0.3% chance of exploitation in the next 30 days; higher than 22% of CVEs (scores of 2026-10-25)
- CWE
- CWE-200
- Published
- Modified
- Record from
- the NVD, synced
Packages (OSV)
| Advisory | Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|---|
| GHSA-q4gh-4ffp-5cg8 | npm | magicmirror | <2.37.0 | 2.37.0 |
References
- https://github.com/MagicMirrorOrg/MagicMirror/commit/ca7b752025962441196e148f8c1bc04b90117979
- https://github.com/MagicMirrorOrg/MagicMirror/pull/4184
- https://github.com/MagicMirrorOrg/MagicMirror/releases/tag/v2.37.0
- https://github.com/MagicMirrorOrg/MagicMirror/security/advisories/GHSA-q4gh-4ffp-5cg8
- https://github.com/MagicMirrorOrg/MagicMirror/security/advisories/GHSA-q4gh-4ffp-5cg8