Drupal core - Moderately critical - Cross-site scripting - SA-CORE-2026-012

Drupal core - Moderately critical - Cross-site scripting - SA-CORE-2026-012

https://www.drupal.org/security/rss.xml / Wed, 07/15/2026 - 22:05
Project: 
Drupal core
Date: 
2026-July-15
Security risk: 
Moderately critical 13 ∕ 25 AC:Basic/A:User/CI:Some/II:Some/E:Theoretical/TD:Default
Vulnerability: 
Cross-site scripting
Affected versions: 
<10.6.13 || >=11.3.0 <11.3.14 || >=11.4.0 <11.4.4 || 11.0.* || 11.1.* || 11.2.*
CVE IDs: 
CVE-2026-55805
Description: 

The Layout Builder module doesn't sufficiently sanitize block labels in certain scenarios, which can lead to a cross-site scripting (XSS) vulnerability.

This is mitigated by the fact that both the attacker and the targeted user need to be using the Layout Builder editing interface.

Solution: 

Install the latest version:

Drupal 11

  • If you use Drupal 11.4.x, update to Drupal 11.4.4.
  • If you use Drupal 11.3.x, update to Drupal 11.3.14.
  • Drupal 11.2.x and below are end-of-life and do not receive security coverage.

Drupal 10

  • If you use Drupal 10.6.x, update to Drupal 10.6.13.
  • Drupal 10.5.x and below are end-of-life and do not receive security coverage.

Drupal 8 and Drupal 9 have both reached end-of-life.

Reported By: 
Fixed By: 
Coordinated By: 

About

Kenya Education Network CERT(KENET-CERT) is a Cybersecurity Emergency Response Team and Co-ordination Center operated by the National Research and Education Network of Kenya. KENET-CERT coordination center promotes awareness on cybersecurity incidences as well as coordinates and assists member institutions in responding effectively to cyber security threats and incidences. KENET-CERT works closely with Kenya's National CIRT coordination center (CIRT/CC) as a sector CIRT for the academic institutions. KENET promotes use of ICT in Teaching, Learning and Research in Higher Education Institutions in Kenya. KENET aims to interconnect all the Universities, Tertiary and Research Institutions in Kenya by setting up a cost effective and sustainable private network with high speed access to the global Internet. KENET also facilitates electronic communication among students and faculties in member institutions, share learning and teaching resources by collaboration in Research and Development of Educational content.