CVE-2026-1554: Central Authentication System (CAS) Server - Less critical - XML Element Injection - SA-CONTRIB-2026-007

Severity: medium (CVSS 4.2 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.2% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-02-04 · updated 2026-06-17
Weakness: CWE-91

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.

Affected products

Drupal Central Authentication System (CAS) Server: before 2.0.3; from 2.1.0 before 2.1.2 — fixed in 2.0.3, 2.1.2

How to fix

Upgrade to a fixed version: Drupal Central Authentication System (CAS) Server 2.0.3, 2.1.2. Check the vendor advisory for mitigations.

References

https://www.drupal.org/sa-contrib-2026-007

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