CVE-2026-126744: Layout builder iframe modal · This module renders Layout Builder forms inside an iframe in a modal
Affects drupal/layout_builder_iframe_modalSource GCVE Database
Not known to be exploited : upgrade to 1.3.9 when convenient.
Data as of 11 Nov 2026, 20:05 UTC
Rated Medium by Threat Radar's AI analysis · CVSS not yet scored by NVD
- Patch
- Available – fixed in 1.3.9
Exploitation evidence
Disclosed: evidence found.
CVE published 11 Nov 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 11 Nov 2026.
What to do
Upgrade drupal/layout_builder_iframe_modal to 1.3.9.
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| Packagist https //packages.drupal.org/8drupal/layout_builder_iframe_modal | Affected
| Fixed in
|
Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.
AI-suggested
Upgrade the Layout Builder iframe modal module to version 1.3.9 or later, where the vulnerability is fixed. No other specific mitigations are indicated. Since a patch is available, applying the official fix is the recommended remediation.
Description
The Layout Builder iframe modal module for Drupal renders forms inside an iframe within a modal dialog using the admin theme. It includes a custom Ajax command to open the iframe dialog that does not sanitize dialog options as strictly as Drupal core does, leading to a potential cross-site scripting (XSS) vulnerability. Exploitation requires the attacker to control the Ajax response or inject markup with specific attributes. A fix is available in version 1.3.9.