[IT-SecNots] [Security-news] Commerce Realex / Global Payments - Moderately critical - Access Bypass - SA-CONTRIB-2026-058

[security-news AT drupal.org]

View online: https://www.drupal.org/sa-contrib-2026-058

Project: Commerce Realex / Global Payments [1]
Date: 2026-June-24
Security risk: *Moderately critical* 12 ∕ 25
AC:Basic/A:None/CI:None/II:Some/E:Theoretical/TD:Default [2]
Vulnerability: Access Bypass

Affected versions: <3.0.2
CVE IDs: CVE-2026-13238
Description: 
This module enables you to take payments through the Global Payments / Realex
Hosted Payment Page (HPP), either via a lightbox iframe or via a full-page
redirect.

When the gateway is configured with the *redirect* payment method, the module
doesn't sufficiently verify the authenticity of the payment response returned
by Global Payments.

The *lightbox* payment method validates the signature and is not affected, so
sites that use the lightbox payment method are not affected.

Solution: 
Install the latest version:

 * If you use the commerce_realex module <=3.0.1, upgrade to commerce_realex
   3.0.2 [3].

The redirect payment response is now cryptographically verified against the
merchant shared secret .

Sites that cannot update immediately should disable this payment gateway,
until the update can be applied.

Reported By: 
 * Bill Seremetis (bserem) [4]

Fixed By: 
 * Bill Seremetis (bserem) [5]
 * Jaime Seuma (jaims-dev) [6]

Coordinated By: 
 * Greg Knaddison (greggles) [7] of the Drupal Security Team
 * Drew Webber (mcdruid) [8] of the Drupal Security Team
 * Juraj Nemec (poker10) [9] of the Drupal Security Team

Security
issue: 
https://git.drupalcode.org/security/185236-commerce_realex-security/-/work_items…
[10]
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Contribution record [11]

[1] https://www.drupal.org/project/commerce_realex
[2] https://www.drupal.org/security-team/risk-levels
[3] https://www.drupal.org/project/commerce_realex/releases/3.0.2
[4] https://www.drupal.org/u/bserem
[5] https://www.drupal.org/u/bserem
[6] https://www.drupal.org/u/jaims-dev
[7] https://www.drupal.org/u/greggles
[8] https://www.drupal.org/u/mcdruid
[9] https://www.drupal.org/u/poker10
[10]  
https://git.drupalcode.org/security/185236-commerce_realex-security/-/work_items/1
[11]  
https://new.drupal.org/contribution-record?source_link=https%3A//www.drupal.org/node/3605856

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