Vulnerability · Published Feb 4, 2026 · Assigned by drupal
CVE-2026-1554Central Authentication System (CAS) Server - Less critical - XML Element Injection - SA-CONTRIB-2026-007
Medium 4.2
In plain English
A medium-severity security flaw in Central Authentication System (CAS) Server from Drupal. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 7% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS 3.1)4.2Medium
Exploit odds (30 days)0.2%top 93.1% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official 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 packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Packagist:https://packages.drupal.org/8 | drupal/cas_server | 2.0.3, 2.1.2 | DRUPAL-CONTRIB-2026-007 |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Drupal | Central Authentication System (CAS) Server | 0.0.0 – before 2.0.32.1.0 – before 2.1.2 |
Weakness: CWE-91 · Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:N