BoomCMS vulnerability

Cross-Frame Scripting (XFS) vulnerability in BoomCMS v9.1.4 from UXB London. XFS is a web attack technique that exploits specific browser bugs to spy on users via JavaScript. This type of attack is based on social engineering and depends entirely on the browser chosen by the user, so it is perceived as a minor threat to web application security. This vulnerability only works in older browsers.

Published 3 Sep 2025Updated 19 Oct 20261 sources
CVSS 2.1

What happened

Cross-Frame Scripting (XFS) vulnerability in BoomCMS v9.1.4 from UXB London. XFS is a web attack technique that exploits specific browser bugs to spy on users via JavaScript. This type of attack is based on social engineering and depends entirely on the browser chosen by the user, so it is perceived as a minor threat to web application security. This vulnerability only works in older browsers.

Affected versions

BoomCMS: 9.1.4 Fixed: See vendor advisory.

Why it matters

Review the vendor advisory and exposure of the affected product to determine operational impact.

Detection & mitigation

  • Apply vendor-provided updates or mitigations.
  • Review affected product exposure and access logs.

Public PoC references

No public PoC reference has passed the current publication threshold.