[IT-SecNots] [Security-news] Monobank payment API - Moderately critical - Access bypass - SA-CONTRIB-2026-130

[security-news AT drupal.org]

View online: https://www.drupal.org/sa-contrib-2026-130

Project: Monobank payment API [1]
Date: 2026-September-02
Security risk: *Moderately critical* 12 ∕ 25
AC:Complex/A:None/CI:None/II:Some/E:Theoretical/TD:All [2]
Vulnerability: Access bypass

Affected versions: <1.0.3
CVE IDs: CVE-2026-84918
Description: 
The Monobank payment API module provides integration with Monobank acquiring
payments.

The module did not verify the Monobank webhook signature before processing
payment status callbacks.

Solution: 
Install the latest version:

 * If you use the Monobank payment API module, upgrade to the monobank 1.0.3
   [3].

Reported By: 
 * Marcus Johansson (marcus_johansson) [4]

Fixed By: 
 * Helena Zajika (helena zajika) [5]
 * Marcus Johansson (marcus_johansson) [6]

Coordinated By: 
 * Swan Kalata (akalata) [7] of the Drupal Security Team
 * Greg Knaddison (greggles) [8] of the Drupal Security Team
 * Juraj Nemec (poker10) [9] of the Drupal Security Team

------------------------------------------------------------------------------
Contribution record [10]

[1] https://www.drupal.org/project/monobank
[2] https://www.drupal.org/security-team/risk-levels
[3] https://www.drupal.org/project/monobank/releases/1.0.3
[4] https://www.drupal.org/u/marcus_johansson
[5] https://www.drupal.org/u/helena-zajika
[6] https://www.drupal.org/u/marcus_johansson
[7] https://www.drupal.org/u/akalata
[8] https://www.drupal.org/u/greggles
[9] https://www.drupal.org/u/poker10
[10]  
https://new.drupal.org/contribution-record?source_link=https%3A//www.drupal.org/node/3617838

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