CVE-2026-28403

HighCVSS 7.6/10Last modified Jun 17, 2026

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.

Metrics

CVSS 3.1 7.6/10CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:H/A:L

Weakness enumeration

CWE-346

Affected software

No affected versions have been published.

Timeline

Published: Mar 2, 2026
Last modified: Jun 17, 2026
NVD status: Analyzed

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