CVE-2026-42281: MagicMirror vulnerable to unauthenticated SSRF via /cors endpoint

May 5, 2026 (updated June 8, 2026)

An unauthenticated Server-Side Request Forgery (SSRF) vulnerability in the /cors endpoint allows any remote attacker to force the MagicMirror² server to perform arbitrary HTTP requests to internal networks, cloud metadata services, and localhost services. The endpoint also expands environment variable placeholders (**VAR_NAME**), enabling exfiltration of server-side secrets.

References

github.com/MagicMirrorOrg/MagicMirror/releases/tag/v2.36.0
github.com/MagicMirrorOrg/MagicMirror/security/advisories/GHSA-ph6f-2cvq-79hq
github.com/advisories/GHSA-ph6f-2cvq-79hq
nvd.nist.gov/vuln/detail/CVE-2026-42281

Code Behaviors & Features

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