Drupal core - SA-CORE-2026-012
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.
Affected software
Click a technology to see all vulnerabilities affecting it.
| Platform | Package | Vulnerable versions | Fixed in |
|---|---|---|---|
| Composer package | drupal/core | < 10.6.13, >= 11.3.0, < 11.3.14, >= 11.4.0, < 11.4.4, >= 11.0.0, < 11.1.0, >= 11.1.0, < 11.2.0, >= 11.2.0, < 11.3.0 | 10.6.13, 11.3.14, 11.4.4, 11.1.0, 11.2.0, 11.3.0 |
| Drupal (core) | drupal/core | < 10.6.13, >= 11.3.0, < 11.3.14, >= 11.4.0, < 11.4.4, >= 11.0.0, < 11.1.0, >= 11.1.0, < 11.2.0, >= 11.2.0, < 11.3.0 | 10.6.13, 11.3.14, 11.4.4, 11.1.0, 11.2.0, 11.3.0 |
References
- Weakness (CWE)
-- Platform
- Composer, Drupal
- Package
drupal/core- Disclosed
- 15.07.2026
- Updated
- 11.10.2026 12:18
Sources and licenses
OSV / GitHub Advisory Database - DRUPAL-CORE-2026-012 - CC BY-SA 2.0; code GPL-2.0-or-later
Vulnerability history: drupal/core
All published vulnerabilities of this package (Composer package), newest first. Shows whether this is a one-off slip or a package that needs watching.
- Total entries
- 146
- First → latest
- 02.2018 09.2026
- Without a fix
- 3
- Exploited in attacks
- 5
Severity breakdown
- Critical 15
- High 40
- Medium 60
- Low 5
- Unrated 26
Disclosures per year
- 2018: 4
- 2019: 14
- 2020: 12
- 2021: 11
- 2022: 55
- 2023: 6
- 2024: 23
- 2025: 8
- 2026: 13
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