This module enables you to turn a Drupal install into the Central Authentication System (CAS).
Impact
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.
Source excerpt · OSVThis 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.
Affected packages
Start with the recorded fix for your release branch. Check your installed version and test compatibility before upgrading. Fixing this advisory does not rule out other vulnerabilities in the release.
| Affected range | Recorded fix |
|---|---|
| Earlier releases before 2.0.3Ecosystem versions | 2.0.3 |
| From 2.1.0 before 2.1.2Ecosystem versions | 2.1.2 |
Version evidence: OSV · DRUPAL-CONTRIB-2026-007
View original version evidence (0 explicit versions)
Original source 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.
The module doesn't sufficiently sanitize user-supplied field values configured to be included as attributes in a CAS server response.
This 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.