Textream before 1.5.1 lacks Origin checks on its local WebSocket server
CVE-2026-28403 is rated CVSS 7.6 for cross-site WebSocket hijacking; both issues were fixed in 1.5.1.
42
CVE-2026-28412
- CVSS 3.1
- 7.5 high
- EPSS
- <1%p27
- Published
- ·
- Modified
Description · NVD
Textream is a free macOS teleprompter app. Prior to version 1.5.1, the `DirectorServer` WebSocket server imposes no limit on concurrent connections. Combined with a broadcast timer that sends state to all connected clients every 100 ms, an attacker can exhaust CPU and memory by flooding the server with connections, causing the Textream application to freeze and crash during a live session. Version 1.5.1 fixes the issue.