View online: https://www.drupal.org/sa-contrib-2026-232 Project: Block Attributes [1] Project machine name: block_attributes Date: 2026-October-21 Security risk: *Moderately critical* 13 ∕ 25 AC:Basic/A:Admin/CI:Some/II:Some/E:Theoretical/TD:All [2] Vulnerability: Cross site Scripting Affected versions: <2.1.0 CVE IDs: CVE-2026-114534 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. Solution: Install the latest version: * If you use the Block Attributes module, upgrade to Block Attributes 2.1.0 [3] Reported By: * Marcus Johansson (marcus_johansson) [4] Fixed By: * David Suissa (dydave) [5] * Kostia Bohach (_shy) [6] Coordinated By: * Swan Kalata (akalata) [7] of the Drupal Security Team * Greg Knaddison (greggles) [8] of the Drupal Security Team * Mohit Aghera (mohit_aghera) [9], provisional member of the Drupal Security Team * Juraj Nemec (poker10) [10] of the Drupal Security Team ------------------------------------------------------------------------------ Contribution record [11] [1] https://www.drupal.org/project/block_attributes [2] https://www.drupal.org/drupal-security-team/security-risk-levels-defined [3] https://www.drupal.org/project/block_attributes/releases/2.1.0 [4] https://www.drupal.org/u/marcus_johansson [5] https://www.drupal.org/u/dydave [6] https://www.drupal.org/u/_shy [7] https://www.drupal.org/u/akalata [8] https://www.drupal.org/u/greggles [9] https://www.drupal.org/u/mohit_aghera [10] https://www.drupal.org/u/poker10 [11] https://new.drupal.org/contribution-record?source_link=https%3A//www.drupal....