# CVE-2026-63643

## Summary

- **CVE ID:** CVE-2026-63643
- **Severity:** MEDIUM
- **CVSS Score:** 6.3 (CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:N/VA:N/SC:L/SI:N/SA:N)
- **CWE:** CWE-918, CWE-441
- **Published:** Aug 18, 2026
- **Last Modified:** Aug 19, 2026

## Description

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 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.

## Affected Products

- MagicMirrorOrg — MagicMirror (< 2.37.0)

## References

- [CNA](https://github.com/MagicMirrorOrg/MagicMirror/security/advisories/GHSA-w6x9-28jw-hq7j)
- [CNA](https://github.com/MagicMirrorOrg/MagicMirror/pull/4169)
- [CNA](https://github.com/MagicMirrorOrg/MagicMirror/commit/58c2a5e675a7d367b64d72e1d35680d202ff5c9f)
- [CNA](https://github.com/MagicMirrorOrg/MagicMirror/releases/tag/v2.37.0)

## Exploitation Prediction (EPSS)

- **EPSS Score:** 0.47%
- **EPSS Percentile:** 39.4

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_Exported from OnDuty AI Vulnerability Intelligence on 2026-09-10._