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....