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Vulnerabilities

Vulnerability · CVE-2026-28403

Textream is a free macOS teleprompter app.

Published Mar 2, 2026 · catalog updated Jun 17, 2026 · Textream is a free

Check if you run it

No confirmed exploitation is on record for CVE-2026-28403. EPSS is 0.18%. Act only if a listed version of Textream is a free is installed.

Gaps on this record

  • The stored product name is a package slug. The name on this page is taken from the title (Textream is a free).
  • No version range is stored. A customer cannot check an installed version against this record.
  • No vendor fix or required action is stored. Compare the linked advisory before you change production.
Severity
High7.6
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
0.18%
Remediation
Advisory link
Affected products
cpe fka/textream

Textream is a free macOS teleprompter app. Prior to version 1.5.1, the WebSocket server ( ) accepts connections from any origin without validating the HTTP 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 payloads, allowing full remote control of the teleprompter content. Version 1.5.1 fixes the issue.

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • cpe fka/textreamversion unspecified

How to fix CVE-2026-28403

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

No confirmed exploitation is on record for CVE-2026-28403. EPSS is 0.18%. Act only if a listed version of Textream is a free is installed.

Which versions are affected?

Affected version ranges are not on this record. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

CWE-346. EPSS 0.18%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Code

The project this record applies to. Exploit listings stay in References.

Timeline

Detection, updates, and resolution for this record.

  1. Mar 2, 2026 · NIST NVD

    Detected

    Textream is a free macOS teleprompter app. Prior to version 1.5.1, the WebSocket server ( ) accepts connections from any origin without validating the HTTP 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 payloads, allowing full remote control of the teleprompter content. Version 1.

  2. Jun 17, 2026 · NIST NVD

    Updated

    Textream is a free macOS teleprompter app. Prior to version 1.5.1, the WebSocket server ( ) accepts connections from any origin without validating the HTTP 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 payloads, allowing full remote control of the teleprompter content. Version 1.

Sources

  • CVE.orgVulnerability recordCVE-2026-28403

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2026-28403

    30-day exploitation probability 0.2%

    first.org
  • NIST NVDVulnerability recordCVE-2026-28403

    Textream is a free macOS teleprompter app. Prior to version 1.5.1, the WebSocket server ( ) accepts connections from any origin without validating the HTTP header during the WebSocket handshake. A malicious web page visited in

    nvd.nist.gov

References

Freshness

Last verified in this catalog Oct 18, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.