Improper Restriction of Rendered UI Layers or Frames Affecting Firefox package, versions [,139)


Severity

Recommended
0.0
medium
0
10

CVSS assessment by Snyk's Security Team. Learn more

Threat Intelligence

EPSS
0.03% (6th percentile)

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  • Snyk IDSNYK-UNMANAGED-FIREFOX-10292600
  • published2 Jun 2025
  • disclosed27 May 2025
  • creditAmeen Basha M K

Introduced: 27 May 2025

NewCVE-2025-5267  (opens in a new tab)
CWE-1021  (opens in a new tab)

How to fix?

Upgrade Firefox to version 139 or higher.

Overview

Affected versions of this package are vulnerable to Improper Restriction of Rendered UI Layers or Frames via the user interface interaction. An attacker can manipulate the user into performing actions they did not intend by embedding the browser within an iframe of a malicious website.

CVSS Base Scores

version 4.0
version 3.1