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DRUPAL-CONTRIB-2026-135

Published Sep 9, 2026·Last modified Sep 9, 2026
Affected Components(2)
Packagist:https://packages.drupal.org/8drupal/cas_server
2.1.0 – 2.1.3
Packagist:https://packages.drupal.org/8drupal/cas_server
< 2.0.4
Description

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.

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Risk Scores
Base Score
0.0

Measures severity based on intrinsic characteristics of the vulnerability, independent of environment.

Threat Intelligence
0.0

No exploitation activity has been observed at this time. Continue routine monitoring.

EPSS
N/A

Probability that this vulnerability will be exploited in the wild within the next 30 days.

Exploit
Not available

We did not find any exploit available. Neither in GitHub repositories nor in the Exploit-Database.

Related Vulnerabilities
  • CVE-2026-87937
    Alias
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