CVE-2026-126744
Published:November 11, 2026
Updated:November 12, 2026
This module renders Layout Builder forms inside an iframe in a modal dialog, using the admin theme. The module provides its own Ajax command to open the iframe dialog. This command does not sanitize the dialog options the same way Drupal core does since "SA-CORE-2026-001" (https://www.drupal.org/sa-core-2026-001), which can lead to a cross-site scripting (XSS) vulnerability. This vulnerability is mitigated by the fact that an attacker must be able to control the Ajax response, or be able to add markup with specific attributes to a page.
Affected Packages
https://git.drupalcode.org/project/layout_builder_iframe_modal.git (SCM_GIT):
Affected version(s) >=1.0.0 <1.3.9Fix Suggestion:
Update to version 1.3.9Related Resources (1)
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Contact UsCVSS v4
Base Score:
2
Attack Vector
NETWORK
Attack Complexity
LOW
Attack Requirements
PRESENT
Privileges Required
LOW
User Interaction
ACTIVE
Vulnerable System Confidentiality
NONE
Vulnerable System Integrity
NONE
Vulnerable System Availability
NONE
Subsequent System Confidentiality
LOW
Subsequent System Integrity
LOW
Subsequent System Availability
NONE
CVSS v3
Base Score:
4.4
Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
LOW
User Interaction
REQUIRED
Scope
CHANGED
Confidentiality
LOW
Integrity
LOW
Availability
NONE
Weakness Type (CWE)
Improper Neutralization of Input During Web Page Generation