{"id":"DRUPAL-CONTRIB-2026-007","details":"This module enables you to turn a Drupal install into the Central Authentication System (CAS). It makes your database the primary location for other systems to use for authentication in a SSO environment.\n\nThe module doesn't sufficiently sanitize user-supplied field values configured to be included as attributes in a CAS server response.\n\nThis vulnerability is mitigated by the fact that an attacker must be authenticated, have the ability to enter XML into a user entity field, and that field be configured as a CAS Attribute source leading to an XML Element Injection vulnerability.","aliases":["CVE-2026-1554"],"modified":"2026-09-10T03:45:42.429481888Z","published":"2026-01-28T17:29:32Z","references":[{"type":"WEB","url":"https://www.drupal.org/sa-contrib-2026-007"}],"affected":[{"package":{"name":"drupal/cas_server","ecosystem":"Packagist:https://packages.drupal.org/8","purl":"pkg:composer/drupal/cas_server?repository_url=https:%2F%2Fpackages.drupal.org%2F8"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.0.3"}],"database_specific":{"constraint":"\u003c2.0.3"}},{"type":"ECOSYSTEM","events":[{"introduced":"2.1.0"},{"fixed":"2.1.2"}],"database_specific":{"constraint":"\u003e=2.1.0 \u003c2.1.2"}}],"database_specific":{"affected_versions":"\u003c2.0.3 || \u003e=2.1.0 \u003c2.1.2","source":"https://github.com/DrupalSecurityTeam/drupal-advisory-database/blob/main/advisories/cas_server/DRUPAL-CONTRIB-2026-007.json"}}],"schema_version":"1.9.0","credits":[{"name":"Gaël Gosset (gaëlg)","contact":["https://www.drupal.org/u/ga%C3%ABlg"]}]}