DRUPAL-CONTRIB-2026-135

See a problem?
Import Source
https://github.com/DrupalSecurityTeam/drupal-advisory-database/blob/main/advisories/cas_server/DRUPAL-CONTRIB-2026-135.json
JSON Data
https://api.osv.dev/v1/vulns/DRUPAL-CONTRIB-2026-135
Aliases
  • CVE-2026-87937
Published
2026-09-09T17:15:40Z
Modified
2026-09-09T19:25:58Z
Summary
[none]
Details

This module enables you to turn a Drupal install into the Central Authentication System (CAS) Server. It makes your database the primary location for other systems to use for authentication in a SSO environment.

The module doesn't sufficiently check the service URL used to redirect the user during logout, leading to an open redirect.

This vulnerability is mitigated by the fact that an attacker must convince a user to click a specially crafted link. The vulnerability cannot be exploited without user interaction and does not allow an attacker to directly compromise the CAS server or bypass authentication.

References
Credits

Affected packages

Packagist:https://packages.drupal.org/8 / drupal/cas_server

Package

Name
drupal/cas_server
Purl
pkg:composer/drupal/cas_server?repository_url=https:%2F%2Fpackages.drupal.org%2F8

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
2.0.4
Database specific
Show details 
{
    "constraint": "<2.0.4"
}
Type
ECOSYSTEM
Events
Introduced
2.1.0
Fixed
2.1.3
Database specific
Show details 
{
    "constraint": ">=2.1.0 <2.1.3"
}

Database specific

affected_versions 
"<2.0.4 || >=2.1.0 <2.1.3"
source 
"https://github.com/DrupalSecurityTeam/drupal-advisory-database/blob/main/advisories/cas_server/DRUPAL-CONTRIB-2026-135.json"