high7.6
CVE-2026-28403
Textream is a free macOS teleprompter app.
Impact
Textream is a free macOS teleprompter app. Prior to version 1.5.1, the `DirectorServer` WebSocket server (`ws://127.0.0.1:<httpPort+1>`) accepts connections from any origin without validating the HTTP `Origin` header during the WebSocket handshake. A malicious web page visited in the same browser session can silently connect to the local WebSocket server and send arbitrary `DirectorCommand` payloads, allowing full remote control of the teleprompter content. Version 1.5.1 fixes the issue.
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| Fka | Textream | before 1.5.1 |