Is CVE-2026-126744 exploited in the wild?

No. Junglewise Threat Intelligence has no report of CVE-2026-126744 being exploited in the wild.

How severe is CVE-2026-126744?

Informational severity, published 11 November 2026.

Which products and versions are affected?

Drupal Layout Builder iFrame Modal before 1.3.9; Packagist:Https://Packages.Drupal.Org/8 Drupal/Layout Builder Iframe Modal ECOSYSTEM:introduced=0,fixed=1.3.9.

How is CVE-2026-126744 attacked?

It is attacked over the network.

Am I affected by CVE-2026-126744?

Check whether you run Drupal Layout Builder iFrame Modal or Packagist:Https://Packages.Drupal.Org/8 Drupal/Layout Builder Iframe Modal at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

CVE-2026-126744: Layout Builder iFrame Modal cross-site scripting in Ajax command

CVE-2026-126744 · Severity: info · Published 2026-11-11

Layout Builder iFrame Modal is a Drupal module that renders form dialogs in iframes. The module's Ajax command fails to properly sanitize dialog options, allowing cross-site scripting attacks. An attacker must control an Ajax response or inject markup with specific attributes to exploit this vulnerability, but successful exploitation could allow an attacker to steal admin session tokens or perform actions as an administrator.

Vendors: Drupal, Packagist:Https://Packages.Drupal.Org/8.

Quick answers

Is CVE-2026-126744 exploited in the wild?: No. Junglewise Threat Intelligence has no report of CVE-2026-126744 being exploited in the wild.
How severe is CVE-2026-126744?: Informational severity, published 11 November 2026.
Which products and versions are affected?: Drupal Layout Builder iFrame Modal before 1.3.9; Packagist:Https://Packages.Drupal.Org/8 Drupal/Layout Builder Iframe Modal ECOSYSTEM:introduced=0,fixed=1.3.9.
Is there a fix for CVE-2026-126744?: Yes. Packagist:Https://Packages.Drupal.Org/8 Drupal/Layout Builder Iframe Modal: upgrade to 1.3.9 or later. Until then: Ensure your Drupal core version includes the fix from SA-CORE-2026-001 (Drupal 10.5.9, 10.6.7, 11.2.11, 11.3.7 or later), as the module's fix relies on that core sanitization. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
How is CVE-2026-126744 attacked?: It is attacked over the network.
Am I affected by CVE-2026-126744?: Check whether you run Drupal Layout Builder iFrame Modal or Packagist:Https://Packages.Drupal.Org/8 Drupal/Layout Builder Iframe Modal at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

How to fix

Packagist:Https://Packages.Drupal.Org/8 Drupal/Layout Builder Iframe Modal: upgrade to 1.3.9 or later

Ensure your Drupal core version includes the fix from SA-CORE-2026-001 (Drupal 10.5.9, 10.6.7, 11.2.11, 11.3.7 or later), as the module's fix relies on that core sanitization.

Technical details

The vulnerability is an unsanitized dialog options handling in the module's custom Ajax command that opens iframe dialogs. The flaw exists because the module does not apply the same sanitization that Drupal core added in SA-CORE-2026-001. Exploitation requires the attacker to either control an Ajax response or inject markup with specific attributes into a page, making this a reflected or stored XSS vulnerability with elevated attack complexity.

Affected products

Drupal Layout Builder iFrame Modal before 1.3.9

Identifiers

CVE-2026-126744
DRUPAL-CONTRIB-2026-335

Timeline

2026-11-11: disclosed

References

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