[IT-SecNots] [Security-news] SAML SSO - Service Provider - Critical - Weak cryptographic practices - SA-CONTRIB-2026-144

[security-news AT drupal.org]

View online: https://www.drupal.org/sa-contrib-2026-144

Project: SAML SSO - Service Provider  [1]
Date: 2026-September-09
Security risk: *Critical* 15 ∕ 25
AC:Complex/A:None/CI:Some/II:Some/E:Theoretical/TD:All [2]
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:

 * Upgrade to SAML SSO - Service Provider 3.2.0 [3].

Reported By: 
 * Sudhanshu Dhage (sudhanshu0542) [4]

Fixed By: 
 * Roushan Kumar Singh (roushan59227) [5]
 * Sudhanshu Dhage (sudhanshu0542) [6]

Coordinated By: 
 * Bram Driesen (bramdriesen) [7] of the Drupal Security Team
 * Greg Knaddison (greggles) [8] of the Drupal Security Team
 * Juraj Nemec (poker10) [9] of the Drupal Security Team
 * Jess  (xjm) [10] of the Drupal Security Team
 * Swan Kalata (akalata) [11] of the Drupal Security Team

------------------------------------------------------------------------------
Contribution record [12]

[1] https://www.drupal.org/project/miniorange_saml
[2] https://www.drupal.org/security-team/risk-levels
[3] https://www.drupal.org/project/miniorange_saml/releases/3.2.0
[4] https://www.drupal.org/u/sudhanshu0542
[5] https://www.drupal.org/u/roushan59227
[6] https://www.drupal.org/u/sudhanshu0542
[7] https://www.drupal.org/u/bramdriesen
[8] https://www.drupal.org/u/greggles
[9] https://www.drupal.org/u/poker10
[10] https://www.drupal.org/u/xjm
[11] https://www.drupal.org/u/akalata
[12]  
https://new.drupal.org/contribution-record?source_link=https%3A//www.drupal.org/node/3621839

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