CVE-2026-28403 (GCVE-0-2026-28403)

Vulnerability from cvelistv5 – Published: 2026-03-02 15:45 – Updated: 2026-03-02 19:27
VLAI
Title
Textream Cross-Site WebSocket Hijacking (CSWSH) vulnerability
Summary
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.
Severity
7.6 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:H/A:L
SSVC
Exploitation: poc Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-03-02 19:26 UTC
CWE
  • CWE-346 - Origin Validation Error
Assigner
GitHub_M CNA
References
Impacted products
Vendor Product Version
f textream Affected: < 1.5.1
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