CVE
CVE-2026-107249
The Block AJAX module enables you to load blocks asynchronously via Ajax.The module doesn't sufficiently validate user-supplied data which is used to construct a block.
The Block AJAX module enables you to load blocks asynchronously via Ajax.
The module doesn't sufficiently validate user-supplied data which is used to construct a block. In the worst case scenario, this can lead to PHP Object Injection and Remote Code Execution.
The vulnerability is mitigated by the fact that it only affects sites that have Layout Builder enabled (or another block plugin that handles the data this module passes to it in a potentially unsafe way).
Please see the release notes for details of potentially breaking changes.
Package Versions Affected
Package Version
patch Availability
No items found.
Automatically patch vulnerabilities without upgrading
Fix Without Upgrading
Detect compatible fix
Apply safe remediation
Fix with a single pull request
CVSS Version
Severity
Base Score
CVSS Version
Score Vector
C
H
U
9.8
-
3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
C
H
U
0
-
C
H
U
-
Related Resources
No items found.
References
https://www.drupal.org/sa-contrib-2026-192