Project: 
SAML SSO - Service Provider
Date: 
2026-September-09
Security risk: 
Critical 15 ∕ 25 AC:Complex/A:None/CI:Some/II:Some/E:Theoretical/TD:All
Vulnerability: 
Weak cryptographic practices
Affected versions: 
<3.2.0
CVE IDs: 
CVE-2026-87946
Description: 

This module allows you to configure your Drupal site as a SAML 2.0 Service Provider so that users can authenticate through an external identity provider.

The module uses cryptographic constructions that do not align with current security best practices.

The module performs certain signature comparisons using non constant-time comparison logic and generates SAML request identifiers using predictable values derived from non-cryptographic random number generation.

While no practical authentication bypass has been demonstrated as a result of these weaknesses alone, they may reduce the overall security margin of SAML authentication workflows.

Solution: 

Install the latest version:

Reported By: 
Fixed By: 
Coordinated By: