MediumGHSA-f3cj-mjqm-fhvjBIT-drupal-2026-6365CVE-2026-6365DRUPAL-CORE-2026-001
Drupal core is Vulnerable to Cross-Site Scripting
Published 20 May 2026 · Updated 10 Sept 2026
Affected packages
drupal/coreComposer
- Affected
- >=8.0.0 <10.5.9
- Fixed in
- 10.5.9
Update to the fixed version for your release line, for example:
composer require drupal/core:^10.5.9drupal/coreComposer
- Affected
- >=10.6.0 <10.6.7
- Fixed in
- 10.6.7
Update to the fixed version for your release line, for example:
composer require drupal/core:^10.6.7drupal/coreComposer
- Affected
- >=11.0.0 <11.2.11
- Fixed in
- 11.2.11
Update to the fixed version for your release line, for example:
composer require drupal/core:^11.2.11drupal/coreComposer
- Affected
- >=11.3.0 <11.3.7
- Fixed in
- 11.3.7
Update to the fixed version for your release line, for example:
composer require drupal/core:^11.3.7Details
Improper Neutralization of Input During Web Page Generation ("Cross-site Scripting") vulnerability in Drupal Drupal core allows Cross-Site Scripting (XSS).
This issue affects Drupal core: from 8.0.0 before 10.5.9, from 10.6.0 before 10.6.7, from 11.0.0 before 11.2.11, from 11.3.0 before 11.3.7.
Is GHSA-f3cj-mjqm-fhvj in any of your client repos?
Checking one package by hand is fine. Checking it across forty client projects is not. NPMscan reads the lockfiles in every GitHub repo you pick, finds each project with an affected drupal/core, and gives you the command that fixes it.
References
Advisory data from OSV.dev (opens OSV.dev in a new tab), refreshed daily.