{"id":"CVE-2026-1554","aliases":["DRUPAL-CONTRIB-2026-007","EUVD-2026-5352","GHSA-rgcm-m74w-vrfx"],"status":"published","title":"Central Authentication System (CAS) Server - Less critical - XML Element Injection - SA-CONTRIB-2026-007","description":"XML Injection (aka Blind XPath Injection) vulnerability in Drupal Central Authentication System (CAS) Server allows Privilege Escalation.This issue affects Central Authentication System (CAS) Server: from 0.0.0 before 2.0.3, from 2.1.0 before 2.1.2.","severity":{"version":"3.1","score":4.2,"vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:N","level":"medium","assessor":"adp","from":"cve"},"epss":{"day":"2026-11-09","score":0.00174,"percentile":0.06892,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-91"],"published":"2026-01-28T17:29:32Z","modified":"2026-10-28T02:30:22Z","fixes":[{"ecosystem":"Packagist:https://packages.drupal.org/8","package":"drupal/cas_server","fixed_in":["2.0.3","2.1.2"],"sources":["osv"]}],"affected":[{"source":"osv","ecosystem":"Packagist:https://packages.drupal.org/8","package":"drupal/cas_server","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.0.3"}]},{"type":"ECOSYSTEM","events":[{"introduced":"2.1.0"},{"fixed":"2.1.2"}]}]}],"products":[{"vendor":"drupal","product":"central authentication system (cas) server"},{"vendor":"jtenman","product":"central_authentication_system_server"}],"references":[{"url":"https://www.drupal.org/sa-contrib-2026-007","tags":["Vendor Advisory","web"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-1554","tags":["advisory"]},{"url":"https://github.com/advisories/GHSA-rgcm-m74w-vrfx"},{"url":"https://git.drupalcode.org/project/cas_server","tags":["web"]},{"url":"https://www.drupal.org/project/cas_server","tags":["web"]},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/1xxx/CVE-2026-1554.json","tags":["advisory"]}],"sources":{"cve":[{"id":"CVE-2026-1554","title":"Central Authentication System (CAS) Server - Less critical - XML Element Injection - SA-CONTRIB-2026-007","description":"XML Injection (aka Blind XPath Injection) vulnerability in Drupal Central Authentication System (CAS) Server allows Privilege Escalation.This issue affects Central Authentication System (CAS) Server: from 0.0.0 before 2.0.3, from 2.1.0 before 2.1.2.","status":"published","published":"2026-02-04T20:26:38.85Z","modified":"2026-02-05T15:15:29.323Z","cvss":[{"version":"3.1","score":4.2,"vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:N","level":"medium","assessor":"adp"}],"cwes":["CWE-91"],"updated_at":"2026-11-02T14:20:00.879257Z"}],"euvd":[{"id":"EUVD-2026-5352","description":"XML Injection (aka Blind XPath Injection) vulnerability in Drupal Central Authentication System (CAS) Server allows Privilege Escalation.This issue affects Central Authentication System (CAS) Server: from 0.0.0 before 2.0.3, from 2.1.0 before 2.1.2.","status":"published","published":"2026-02-04T20:26:38Z","modified":"2026-02-05T15:15:29Z","cvss":[{"version":"3.1","score":4.2,"vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:N","level":"medium"}],"updated_at":"2026-11-02T19:48:43.229255Z"}],"ghsa":[{"id":"GHSA-rgcm-m74w-vrfx","title":"XML Injection (aka Blind XPath Injection) vulnerability in Drupal Central Authentication System ...","description":"XML Injection (aka Blind XPath Injection) vulnerability in Drupal Central Authentication System (CAS) Server allows Privilege Escalation.This issue affects Central Authentication System (CAS) Server: from 0.0.0 before 2.0.3, from 2.1.0 before 2.1.2.","status":"published","published":"2026-02-04T21:30:32Z","modified":"2026-02-05T18:31:32Z","cvss":[{"version":"3.1","score":4.2,"vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:N","level":"medium"}],"cwes":["CWE-91"],"updated_at":"2026-11-02T15:06:04.029234Z"}],"nvd":[{"id":"CVE-2026-1554","description":"XML Injection (aka Blind XPath Injection) vulnerability in Drupal Central Authentication System (CAS) Server allows Privilege Escalation.This issue affects Central Authentication System (CAS) Server: from 0.0.0 before 2.0.3, from 2.1.0 before 2.1.2.","status":"published","published":"2026-02-04T21:15:59.427Z","modified":"2026-06-17T10:16:03.767Z","cvss":[{"version":"3.1","score":4.2,"vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:N","level":"medium","assessor":"secondary"}],"cwes":["CWE-91"],"updated_at":"2026-11-02T14:12:05.149641Z"}],"osv":[{"id":"CVE-2026-1554","title":"Central Authentication System (CAS) Server - Less critical - XML Element Injection - SA-CONTRIB-2026-007","description":"XML Injection (aka Blind XPath Injection) vulnerability in Drupal Central Authentication System (CAS) Server allows Privilege Escalation.This issue affects Central Authentication System (CAS) Server: from 0.0.0 before 2.0.3, from 2.1.0 before 2.1.2.","status":"published","published":"2026-02-04T20:26:38.85Z","modified":"2026-10-28T02:30:22.157632129Z","cvss":[{"version":"3.1","score":4.2,"vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:N","level":"medium"}],"cwes":["CWE-91"],"updated_at":"2026-11-02T15:44:57.682091Z"},{"id":"DRUPAL-CONTRIB-2026-007","description":"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.","status":"published","published":"2026-01-28T17:29:32Z","modified":"2026-09-10T03:45:42.429481888Z","updated_at":"2026-11-02T15:46:13.900249Z"}]}}