View online: https://www.drupal.org/sa-contrib-2026-067 Project: FlowDrop [1] Date: 2026-July-01 Security risk: *Moderately critical* 12 ∕ 25 AC:Basic/A:User/CI:Some/II:Some/E:Theoretical/TD:Uncommon [2] Vulnerability: Access bypass Affected versions: <1.6.0 CVE IDs: CVE-2026-58589 Description: This module enables you to test and run AI-driven workflows interactively through a chat interface. The module doesn't sufficiently enforce permissions on certain endpoints. Attackers may be able to trigger workflow execution (incurring LLM spend and tool side effects) or send messages into other user's sessions. This vulnerability is mitigated by the fact that an attacker must have the permission "View any session", which is not granted to anonymous or authenticated users by default. Solution: Install the latest version: * If you use the FlowDrop module for Drupal 11.x, upgrade to FlowDrop 1.6.0 [3] Driving a session now additionally requires the "Execute session workflow" permission. Reported By: * Aincient Labs (aincient labs) [4] Fixed By: * Shibin Das (d34dman) [5] Coordinated By: * Greg Knaddison (greggles) [6] of the Drupal Security Team * Neil Drumm (drumm) [7] of the Drupal Security Team * Juraj Nemec (poker10) [8] of the Drupal Security Team * Dave Long (longwave) [9] of the Drupal Security Team Security issue: https://git.drupalcode.org/security/3592076-flowdrop-security/-/work_items/1 [10] ------------------------------------------------------------------------------ Contribution record [11] [1] https://www.drupal.org/project/flowdrop [2] https://www.drupal.org/security-team/risk-levels [3] https://www.drupal.org/project/flowdrop/releases/1.6.0 [4] https://www.drupal.org/u/aincient-labs [5] https://www.drupal.org/u/d34dman [6] https://www.drupal.org/u/greggles [7] https://www.drupal.org/u/drumm [8] https://www.drupal.org/u/poker10 [9] https://www.drupal.org/u/longwave [10] https://git.drupalcode.org/security/3592076-flowdrop-security/-/work_items/1 [11] https://new.drupal.org/contribution-record?source_link=https%3A//www.drupal....