🛡️ CVE-2026-1554
🟡 CVSS 4.2 — Medium ✅ No Known Exploit CWE-91 NVD
4.2
CVSS Score
0 Low4 Medium7 High9 Critical10

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.

Details

Severity MEDIUM
CVSS Score 4.2
CVSS Vector CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:N
CWE CWE-91
Public Exploit ✅ No
Source NVD
Published 2026-02-04
Updated 2026-06-02
Modified 2026-02-11
Fix URL N/A

Affected Packages

Software From version Fixed in
central-authentication-system-server 2.1.0 2.1.2
drupal/cas-server 2.1.0 2.1.2

References

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