CVE-2026-63643 MagicMirror: ssrf calendar .js
An unauthenticated attacker can trigger server-side requests via the calendar module to exfiltrate internal data or bypass TLS verification.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-63643?
CVE-2026-63643 is a medium-severity server-side request forgery vulnerability in MagicMirrorOrg MagicMirror, published on 18 Aug 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official 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.
Which versions are affected by CVE-2026-63643?
2 open source packages ship an affected version, including magicmirror.
| Package | Affected | Fixed in |
|---|---|---|
magicmirror npm | All versions | 2.37.0 |
magicmirror npm | All versions | 2.37.0 |
How do I fix CVE-2026-63643?
Upgrade magicmirror to 2.37.0 or later.
Upgrade, and send outbound requests through an allow-list that blocks internal addresses. More about Server-side request forgery.
Is CVE-2026-63643 being exploited?
There is no known exploitation of CVE-2026-63643 in the wild and no public exploit code.
Sources
Also known as GHSA-w6x9-28jw-hq7j.