CVE-2026-28403

HIGH EPSS 3.4%
Published Mar 2, 20263mo ago · Modified Mar 10, 20263mo ago
7.6 CVSS 3.1
High
Find Similar
Published Mar 2, 2026 3mo ago
Last Modified Mar 10, 2026 3mo ago

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.

CVSS Details

Base Score
7.6
Exploitability
2.8
Impact
4.7
Vector string
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:H/A:L
Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction Required
Scope Unchanged
Confidentiality Low
Integrity High
Availability Low

Threat Intelligence

EPSS Exploit Probability
3.4% percentile
Exploit & Patch Status
Public Exploit Known
Patch Available

Weaknesses 1

CWE-346

Affected Products 1

VendorProductVersionRange
fkatextream* <1.5.1

References 2

  • github.com https://github.com/f/textream/commit/f5ebad82750b9313386c34af8f0ede50c213a8a0
    Patch
  • github.com https://github.com/f/textream/security/advisories/GHSA-wr3v-x247-337w
    ExploitMitigationVendor Advisory

Remediation

  • github.com https://github.com/f/textream/commit/f5ebad82750b9313386c34af8f0ede50c213a8a0
    Patch