CVE Catalog

CVE-2026-87937

MediumCVSS 6.5
Published: Updated: Translated: NVD NIST

Exploitation Probability (EPSS)

Low risk
0.23%

13th percentile - higher than 13% of all known CVEs

Summary

The Drupal Central Authentication System (CAS) Server module contains an Open Redirect vulnerability (redirection to an untrusted site) that allows faking the source of data. The issue affects versions from 0.0.0 to 2.0.4 and from 2.1.0 to 2.1.3.

Risk Assessment

An attacker may redirect users to a malicious site, which can facilitate phishing or theft of credentials. The risk affects Drupal sites with the CAS Server module in the listed versions.

Recommendation

Update the CAS Server module to a version later than 2.0.4 or 2.1.3 (for the respective branch). Review the configuration of allowed redirect addresses.

Related vulnerabilities

Original NVD description (English source)

URL Redirection to Untrusted Site ('Open Redirect') vulnerability in Drupal Central Authentication System (CAS) Server allows Fake the Source of Data. This issue affects Central Authentication System (CAS) Server versions: from 0.0.0 to 2.0.4, from 2.1.0 to 2.1.3.

Vulnerability data from NVD (NIST) · CISA KEV · EPSS