[IT-SecNots] [Security-news] Drupal AlternativeCommerce (Basket) - Highly critical - Arbitrary PHP code execution - SA-CONTRIB-2026-038

[security-news AT drupal.org]

View online: https://www.drupal.org/sa-contrib-2026-038

Project: Drupal AlternativeCommerce (Basket) [1]
Date: 2026-May-27
Security risk: *Highly critical* 22 ∕ 25
AC:None/A:None/CI:All/II:All/E:Theoretical/TD:All [2]
Vulnerability: Arbitrary PHP code execution

Affected versions: <2.1.17
CVE IDs: CVE-2026-9726
Description: 
The Basket module enables e-commerce and checkout functionality for Drupal
sites.

The module does not sufficiently sanitize user-supplied data before passing
it to PHP's unserialize().

An attacker can supply a crafted payload and trigger PHP Object Injection. If
a viable gadget chain exists in the site codebase or installed dependencies,
this can result in arbitrary PHP code execution.

Solution: 
Install the latest version:

 * If you use the Basket module, upgrade to Basket 2.1.17.

Reported By: 
 * Drew Webber (mcdruid) [3] of the Drupal Security Team

Fixed By: 
 * Helena Zajika (helena zajika) [4]
 * Drew Webber (mcdruid) [5] of the Drupal Security Team

Coordinated By: 
 * Greg Knaddison (greggles) [6] of the Drupal Security Team
 * Dave Long (longwave) [7] of the Drupal Security Team
 * Drew Webber (mcdruid) [8] of the Drupal Security Team

Security
issue: 
https://git.drupalcode.org/security/185185-basket-security/-/work_items/1
[9]
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Contribution record [10]

[1] https://www.drupal.org/project/basket
[2] https://www.drupal.org/security-team/risk-levels
[3] https://www.drupal.org/u/mcdruid
[4] https://www.drupal.org/u/helena-zajika
[5] https://www.drupal.org/u/mcdruid
[6] https://www.drupal.org/u/greggles
[7] https://www.drupal.org/u/longwave
[8] https://www.drupal.org/u/mcdruid
[9] https://git.drupalcode.org/security/185185-basket-security/-/work_items/1
[10]  
https://new.drupal.org/contribution-record?source_link=https%3A//www.drupal.org/node/3591593

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