CVE-2026-28403
HIGHTextream < 1.5.1 - Unauthenticated WebSocket Origin Validation Error
Title source: llmDescription
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.
References (2)
Core 2
Core References
Vendor Advisory x_refsource_confirm
https://github.com/f/textream/security/advisories/GHSA-wr3v-x247-337w
Patch x_refsource_misc
https://github.com/f/textream/commit/f5ebad82750b9313386c34af8f0ede50c213a8a0
Scores
CVSS v3
7.6
EPSS
0.0014
EPSS Percentile
3.3%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:H/A:L
CISA SSVC
Vulnrichment
Exploitation
poc
Automatable
no
Technical Impact
partial
Details
CWE
CWE-346
Status
published
Products (2)
fka/textream
< 1.5.1
textream/textream
< 1.5.1
Published
Mar 02, 2026
Tracked Since
Mar 02, 2026