CVE-2026-28403
High
Description
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.
SeverityHigh
CVSS7.6
Exploit probability—
ProductFka Textream
PublishedMar 2, 2026
First seenMar 2, 2026
Weakness typeCWE-346CWE-346
How to fix
Update
- fka textream1.5.1 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| fka textream | v < 1.5.1 | 1.5.1 |
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