CVE-2026-114534
Medium
Description
This module allows you to define custom attributes for a block. You can specify an attribute name to be added to the block in a predefined format. The module does not sufficiently sanitize attributes against cross site scripting. This issue is mitigated by the fact that the attacker must have the `administer blocks` permission.
SeverityMedium
CVSS5.9
Exploit probability—
ProductDrupal/block Attributes
PublishedOct 21, 2026
First seenOct 21, 2026
Weakness typeCWE-79Cross-site scripting (XSS)
How to fix
Update
- drupal/block_attributes2.1.0 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| drupal/block_attributesPackagist:https://packages.drupal.org/8 | v < 2.1.0 | 2.1.0 |
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