What is CVE-2026-1554?

CVE-2026-1554 is a medium-severity vulnerability in Drupal Central Authentication System (Cas) Server, classified under XML Injection (Blind XPath Injection). CVSS score: 4.2/10. Published 2026-02-04.

How severe is CVE-2026-1554?

Medium severity. CVSS v3 base score is 4.2 out of 10.

XPath Injection in Drupal Central Authentication System (Cas) Server

CVE-2026-1554

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.

EPSS: 0.002 (4.8th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 4.2 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:N.

Affected products

Drupal Central Authentication System (Cas) Server — versions 0.0.0, 2.1.0
Jtenman Central_authentication_system_server

Weakness classification (CWE)

CWE-91 — XML Injection (Blind XPath Injection)

References

mlhess@drupal.org (Vendor Advisory)

Frequently asked questions

What is CVE-2026-1554?: CVE-2026-1554 is a medium-severity vulnerability in Drupal Central Authentication System (Cas) Server, classified under XML Injection (Blind XPath Injection). CVSS score: 4.2/10. Published 2026-02-04.
How severe is CVE-2026-1554?: Medium severity. CVSS v3 base score is 4.2 out of 10.