Log in Start free

Vulnerability · Published Aug 18, 2026 · Assigned by GitHub_M

CVE-2026-63640MagicMirror socket payload secret placeholder expansion can disclose SECRET_* environment variables

Medium 4.3

In plain English

A medium-severity information exposure in MagicMirror from MagicMirrorOrg. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 23% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)4.3Medium
Exploit odds (30 days)0.3%top 77.4% of all CVEs
Exploited in the wildNo reportsCISA SSVC: poc
Attack toolingNoneno public tooling known

Official 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.

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
npmmagicmirror2.37.0GHSA-q4gh-4ffp-5cg8

Affected products (as reported)

VendorProductVersions
MagicMirrorOrg MagicMirror < 2.37.0

Weakness: CWE-200 · Vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

References