Midscene Bridge Server - Session Hijack via Unauthenticated WebSocket

Versions reported by the vendor

Affected version ranges reported by the assigning authority (VulnCheck). Independent of NVD's CPE analysis and usually ahead of it.

• web-infra-dev midscene

  • 86f4118d1d847041c63d79e347e08c87c3f1a882not affected
  • up to and including 1.10.3affected · semver

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

Root cause

A function added for development or support ships to production without authentication. It often relies on the assumption that it is “only reachable from the internal network.”

A representative example of this vulnerability class. Not the vendor's source code; it shows the faulty pattern and its fix.

1// Added for the support team2app.post("/maintenance/reset", resetDevice);

1if (config.maintenanceEnabled) {2  app.post(3    "/maintenance/reset",4    requireSession, requireRole("admin"), resetDevice5  );6}

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.