drupal/cas_server - SA-CONTRIB-2026-007
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.
Affected software
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| Platform | Package | Vulnerable versions | Fixed in |
|---|---|---|---|
| Composer package | drupal/cas_server | < 2.0.3, >= 2.1.0, < 2.1.2 | 2.0.3, 2.1.2 |
| Drupal module | drupal/cas_server | < 2.0.3, >= 2.1.0, < 2.1.2 | 2.0.3, 2.1.2 |
References
- Weakness (CWE)
-- Platform
- Composer, Drupal
- Package
drupal/cas_server- Disclosed
- 28.01.2026
- Updated
- 11.10.2026 12:18
Sources and licenses
OSV / GitHub Advisory Database - DRUPAL-CONTRIB-2026-007 - CC BY-SA 2.0; code GPL-2.0-or-later
Vulnerability history: drupal/cas_server
All published vulnerabilities of this package (Composer package), newest first. Shows whether this is a one-off slip or a package that needs watching.
- Total entries
- 2
- First → latest
- 01.2026 09.2026
- Without a fix
- 0
- Exploited in attacks
- 0
Severity breakdown
- Unrated 2
Disclosures per year
- 2026: 2
-
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