CVE-2026-1554

mediumpriority · track · 0EPSS 0.002 · 7 %ileDEEUUS

grimoire priorityP3 · Track

Exploitable?

—

no known exploitation

Likely / severe?

0.18% (7th) EPSS

CVSS 4.2 · medium

Is it mine?

10 products

Check your exposure

Who says so?

5 sources

cnnvd · enisa_euvd · cert_bund · nvd

EPSS · scored 2026-10-28

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.

cvss

Technical severity, 0–10. One row per scoring source.

4.2

010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · low–medium · 3.9–4.2

v3.14.2mediumCVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:Nsecondary · ENISA EU

v3.14.2mediumCVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:Nsecondaryexploitability 1.6 · impact 2.5

v3.13.9lowCVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:N/E:Usecondary · CVSS-BT (t0sche)

ssvc

A stakeholder decision — act, attend, or track — from exploitation and impact.

Trackcoordinatorcisa_ssvcUS

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-91US

affected products (10)

Products and version ranges known to be affected.

Open Source Drupal CAS Server <2.0.3all versionscert_bundDE
Open Source Drupal CAS Server <2.1.2all versionscert_bundDE
Open Source Drupal≤ CAS Server <2.0.3cert_bundDE
Open Source Drupal≤ CAS Server <2.1.2cert_bundDE
Drupal Central Authentication System (CAS) Server0.0.0 → 2.0.3enisa_euvdEU
Drupal Central Authentication System (CAS) Server2.1.0 → 2.1.2enisa_euvdEU
jtenman central authentication system server< 2.0.3nvdUScpe:2.3:a:jtenman:central_authentication_system_server:*:*:*:*:*:*:*:*
jtenman central authentication system server2.1.0 → 2.1.2nvdUScpe:2.3:a:jtenman:central_authentication_system_server:*:*:*:*:*:*:*:*
Packagist:https://packages.drupal.org/8 drupal/cas_server< 2.0.3osvUSpkg:composer/drupal/cas_server?repository_url=https:%2F%2Fpackages.drupal.org%2F8
Packagist:https://packages.drupal.org/8 drupal/cas_server2.1.0 → 2.1.2osvUSpkg:composer/drupal/cas_server?repository_url=https:%2F%2Fpackages.drupal.org%2F8

advisories (2)

Vendor and ecosystem advisories describing this.

WID-SEC-W-2026-0250Drupal Canvas und CAS: Mehrere SchwachstellenDeutsch2026-01-28csaf · cert_bundDE
Ein entfernter, anonymer oder authentisierter Angreifer kann mehrere Schwachstellen in Drupal ausnutzen, um Sicherheitsvorkehrungen zu umgehen oder Daten zu manipulieren.
DRUPAL-CONTRIB-2026-0072026-01-28vendor · osvUS
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.

also known as (3)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd cert_bund nvd osv NVD CVE.org MITRE

published 2026-02-04modified 2026-06-17

references (3)

External citations — patches, advisories, analysis.

scry

Attackers weaponise vulnerabilities like this against internet-exposed services. See what is exposed on your perimeter with a free passive scan.

Free scan