Home/CWE/Improper Restriction of Rendered UI Layers or Frames
Weakness

Improper Restriction of Rendered UI Layers or Frames

CWE-1021 · Base · Incomplete

The web application does not restrict or incorrectly restricts frame objects or UI layers that belong to another application or domain.

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Weakness Relationships

Where this weakness sits in the CWE hierarchy. Walk up to broader classes or down to more specific variants.
Parent of this (broader)
ChildOfCWE-441 · Unintended Proxy or Intermediary ('Confused Deputy')
ChildOfCWE-451 · User Interface (UI) Misrepresentation of Critical Information
ChildOfCWE-610 · Externally Controlled Reference to a Resource in Another Sphere
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Attack Patterns (CAPEC)

7
How adversaries exploit this weakness, per MITRE CAPEC.
CAPEC-103Clickjacking
CAPEC-181Flash File Overlay
CAPEC-222iFrame Overlay
CAPEC-504Task Impersonation
CAPEC-506Tapjacking
CAPEC-587Cross Frame Scripting (XFS)
CAPEC-654Credential Prompt Impersonation
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CVEs With This Weakness

447
A sample of the 447 CVEs tagged with this weakness.
CVECVE-2026-8022
CVECVE-2026-3254
CVECVE-2026-28971
CVECVE-2026-27511
CVECVE-2026-26000
CVECVE-2026-24839
CVECVE-2026-2378
CVECVE-2026-23731
CVECVE-2026-22918
CVECVE-2026-20645
CVECVE-2026-20645
CVECVE-2026-0007
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Nuclei Scanner Templates

1
Open-source Nuclei templates that detect this weakness class - an actionable scan-for-it pivot. Licensed under the ProjectDiscovery / Nuclei terms.
mediumunilogies/bumsys < v2.0.2 - Clickjacking
External lookups - second-class, for what we don’t hold ourselves
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