Is CVE-2026-28403 actively exploited?

CVE-2026-28403 has no public evidence of in-the-wild exploitation as of 2026-03-10.

What is the CVSS score for CVE-2026-28403?

CVE-2026-28403 has a CVSS score of 7.6 (HIGH severity). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:H/A:L.

How do I patch CVE-2026-28403?

Patch guidance is available from fka security advisories. CVEDatabase generates AI-assisted remediation guidance on demand for CVE-2026-28403.

Fix CVE-2026-28403 - HIGH fka textream

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 Metrics

Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:H/A:L
Attack Vector: network
Complexity: low
Privileges: none
User Action: required
Scope: unchanged
Confidentiality: low
Integrity: high
Availability: low
Weaknesses: CWE-346

Metadata

Primary Vendor: FKA
Published: 3/2/2026
Last Modified: 3/10/2026
Source: NIST NVD
Note: Verify all details with official vendor sources before applying patches.

CVE-2026-28403

Description

CVSS Metrics

Metadata

Affected Products

Remediation Guidance

Executive Summary