{"id":"DRUPAL-CORE-2026-012","details":"The Layout Builder module doesn't sufficiently sanitize block labels in certain scenarios, which can lead to a cross-site scripting (XSS) vulnerability.\n\nThis is mitigated by the fact that both the attacker and the targeted user need to be using the Layout Builder editing interface.","aliases":["CVE-2026-55805"],"modified":"2026-07-15T20:56:45.672035Z","published":"2026-07-15T19:52:26Z","references":[{"type":"WEB","url":"https://www.drupal.org/sa-core-2026-012"}],"affected":[{"package":{"name":"drupal/core","ecosystem":"Packagist","purl":"pkg:composer/drupal/core"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"10.6.13"}],"database_specific":{"constraint":"\u003c10.6.13"}},{"type":"ECOSYSTEM","events":[{"introduced":"11.3.0"},{"fixed":"11.3.14"}],"database_specific":{"constraint":"\u003e=11.3.0 \u003c11.3.14"}},{"type":"ECOSYSTEM","events":[{"introduced":"11.4.0"},{"fixed":"11.4.4"}],"database_specific":{"constraint":"\u003e=11.4.0 \u003c11.4.4"}},{"type":"ECOSYSTEM","events":[{"introduced":"11.0.0"},{"fixed":"11.1.0"}],"database_specific":{"constraint":"11.0.*"}},{"type":"ECOSYSTEM","events":[{"introduced":"11.1.0"},{"fixed":"11.2.0"}],"database_specific":{"constraint":"11.1.*"}},{"type":"ECOSYSTEM","events":[{"introduced":"11.2.0"},{"fixed":"11.3.0"}],"database_specific":{"constraint":"11.2.*"}}],"versions":["10.0.0","10.0.0-alpha1","10.0.0-alpha2","10.0.0-alpha3","10.0.0-alpha4","10.0.0-alpha5","10.0.0-alpha6","10.0.0-alpha7","10.0.0-beta1","10.0.0-beta2","10.0.0-rc1","10.0.0-rc2","10.0.0-rc3","10.0.1","10.0.10","10.0.11","10.0.2","10.0.3","10.0.4","10.0.5","10.0.6","10.0.7","10.0.8","10.0.9","10.1.0","10.1.0-alpha1","10.1.0-beta1","10.1.0-rc1","10.1.1","10.1.2","10.1.3","10.1.4","10.1.5","10.1.6","10.1.7","10.1.8","10.2.0","10.2.0-alpha1","10.2.0-beta1","10.2.0-rc1","10.2.1","10.2.10","10.2.11","10.2.12","10.2.2","10.2.3","10.2.4","10.2.5","10.2.6","10.2.7","10.2.8","10.2.9","10.3.0","10.3.0-beta1","10.3.0-rc1","10.3.1","10.3.10","10.3.11","10.3.12","10.3.13","10.3.14","10.3.2","10.3.3","10.3.4","10.3.5","10.3.6","10.3.7","10.3.8","10.3.9","10.4.0","10.4.0-beta1","10.4.0-rc1","10.4.1","10.4.10","10.4.2","10.4.3","10.4.4","10.4.5","10.4.6","10.4.7","10.4.8","10.4.9","10.5.0","10.5.0-beta1","10.5.0-rc1","10.5.1","10.5.10","10.5.11","10.5.12","10.5.2","10.5.3","10.5.4","10.5.5","10.5.6","10.5.7","10.5.8","10.5.9","10.6.0","10.6.0-beta1","10.6.0-rc1","10.6.1","10.6.10","10.6.11","10.6.12","10.6.2","10.6.3","10.6.4","10.6.5","10.6.6","10.6.7","10.6.8","10.6.9","11.0.0","11.0.1","11.0.10","11.0.11","11.0.12","11.0.13","11.0.2","11.0.3","11.0.4","11.0.5","11.0.6","11.0.7","11.0.8","11.0.9","11.1.0","11.1.0-beta1","11.1.0-rc1","11.1.1","11.1.10","11.1.2","11.1.3","11.1.4","11.1.5","11.1.6","11.1.7","11.1.8","11.1.9","11.2.0","11.2.0-alpha1","11.2.0-beta1","11.2.0-rc1","11.2.0-rc2","11.2.1","11.2.10","11.2.11","11.2.12","11.2.13","11.2.14","11.2.2","11.2.3","11.2.4","11.2.5","11.2.6","11.2.7","11.2.8","11.2.9","11.3.0","11.3.0-alpha1","11.3.0-beta1","11.3.0-rc1","11.3.0-rc2","11.3.1","11.3.10","11.3.11","11.3.12","11.3.13","11.3.2","11.3.3","11.3.4","11.3.5","11.3.6","11.3.7","11.3.8","11.3.9","11.4.0","11.4.1","11.4.2","11.4.3","8.0.0","8.0.0-beta10","8.0.0-beta11","8.0.0-beta12","8.0.0-beta13","8.0.0-beta14","8.0.0-beta15","8.0.0-beta16","8.0.0-beta6","8.0.0-beta7","8.0.0-beta8","8.0.0-beta9","8.0.0-rc1","8.0.0-rc2","8.0.0-rc3","8.0.0-rc4","8.0.1","8.0.2","8.0.3","8.0.4","8.0.5","8.0.6","8.1.0","8.1.0-beta1","8.1.0-beta2","8.1.0-rc1","8.1.1","8.1.10","8.1.2","8.1.3","8.1.4","8.1.5","8.1.6","8.1.7","8.1.8","8.1.9","8.2.0","8.2.0-beta1","8.2.0-beta2","8.2.0-beta3","8.2.0-rc1","8.2.0-rc2","8.2.1","8.2.2","8.2.3","8.2.4","8.2.5","8.2.6","8.2.7","8.2.8","8.3.0","8.3.0-alpha1","8.3.0-beta1","8.3.0-rc1","8.3.0-rc2","8.3.1","8.3.2","8.3.3","8.3.4","8.3.5","8.3.6","8.3.7","8.3.8","8.3.9","8.4.0","8.4.0-alpha1","8.4.0-beta1","8.4.0-rc1","8.4.0-rc2","8.4.1","8.4.2","8.4.3","8.4.4","8.4.5","8.4.6","8.4.7","8.4.8","8.5.0","8.5.0-alpha1","8.5.0-beta1","8.5.0-rc1","8.5.1","8.5.10","8.5.11","8.5.12","8.5.13","8.5.14","8.5.15","8.5.2","8.5.3","8.5.4","8.5.5","8.5.6","8.5.7","8.5.8","8.5.9","8.6.0","8.6.0-alpha1","8.6.0-beta1","8.6.0-beta2","8.6.0-rc1","8.6.1","8.6.10","8.6.11","8.6.12","8.6.13","8.6.14","8.6.15","8.6.16","8.6.17","8.6.18","8.6.2","8.6.3","8.6.4","8.6.5","8.6.6","8.6.7","8.6.8","8.6.9","8.7.0","8.7.0-alpha1","8.7.0-alpha2","8.7.0-beta1","8.7.0-beta2","8.7.0-rc1","8.7.1","8.7.10","8.7.11","8.7.12","8.7.13","8.7.14","8.7.2","8.7.3","8.7.4","8.7.5","8.7.6","8.7.7","8.7.8","8.7.9","8.8.0","8.8.0-alpha1","8.8.0-beta1","8.8.0-rc1","8.8.1","8.8.10","8.8.11","8.8.12","8.8.2","8.8.3","8.8.4","8.8.5","8.8.6","8.8.7","8.8.8","8.8.9","8.9.0","8.9.0-beta1","8.9.0-beta2","8.9.0-beta3","8.9.0-rc1","8.9.1","8.9.10","8.9.11","8.9.12","8.9.13","8.9.14","8.9.15","8.9.16","8.9.17","8.9.18","8.9.19","8.9.2","8.9.20","8.9.3","8.9.4","8.9.5","8.9.6","8.9.7","8.9.8","8.9.9","9.0.0","9.0.0-alpha1","9.0.0-alpha2","9.0.0-beta1","9.0.0-beta2","9.0.0-beta3","9.0.0-rc1","9.0.1","9.0.10","9.0.11","9.0.12","9.0.13","9.0.14","9.0.2","9.0.3","9.0.4","9.0.5","9.0.6","9.0.7","9.0.8","9.0.9","9.1.0","9.1.0-alpha1","9.1.0-beta1","9.1.0-rc1","9.1.0-rc2","9.1.0-rc3","9.1.1","9.1.10","9.1.11","9.1.12","9.1.13","9.1.14","9.1.15","9.1.2","9.1.3","9.1.4","9.1.5","9.1.6","9.1.7","9.1.8","9.1.9","9.2.0","9.2.0-alpha1","9.2.0-beta1","9.2.0-beta2","9.2.0-beta3","9.2.0-rc1","9.2.1","9.2.10","9.2.11","9.2.12","9.2.13","9.2.14","9.2.15","9.2.16","9.2.17","9.2.18","9.2.19","9.2.2","9.2.20","9.2.21","9.2.3","9.2.4","9.2.5","9.2.6","9.2.7","9.2.8","9.2.9","9.3.0","9.3.0-alpha1","9.3.0-beta1","9.3.0-beta2","9.3.0-beta3","9.3.0-rc1","9.3.1","9.3.10","9.3.11","9.3.12","9.3.13","9.3.14","9.3.15","9.3.16","9.3.17","9.3.18","9.3.19","9.3.2","9.3.20","9.3.21","9.3.22","9.3.3","9.3.4","9.3.5","9.3.6","9.3.7","9.3.8","9.3.9","9.4.0","9.4.0-alpha1","9.4.0-beta1","9.4.0-rc1","9.4.0-rc2","9.4.1","9.4.10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|| \u003e=11.3.0 \u003c11.3.14 || \u003e=11.4.0 \u003c11.4.4 || 11.0.* || 11.1.* || 11.2.*","source":"https://github.com/DrupalSecurityTeam/drupal-advisory-database/blob/main/advisories/core/DRUPAL-CORE-2026-012.json"}}],"schema_version":"1.9.0","credits":[{"name":"haii haii (hai27ii2o)","contact":["https://www.drupal.org/u/hai27ii2o"]}]}