View online: https://www.drupal.org/sa-contrib-2026-293 Project: Content Synchronizer [1] Project machine name: content_synchronizer Date: 2026-November-04 Security risk: *Critical* 17 ∕ 25 AC:Basic/A:Admin/CI:All/II:All/E:Theoretical/TD:All [2] Vulnerability: Remote code execution Affected versions: <4.1.1 CVE IDs: CVE-2026-118547 Description: The Content Synchronizer module allows content to be exported and imported between Drupal sites via uploaded archive files. A maliciously crafted import file can cause untrusted data to be deserialized (PHP Object Injection, CWE-502), potentially leading to remote code execution. Solution: Install the latest version: * Upgrade to Content Synchronizer 4.1.1 [3]. Reported By: * Drew Webber (mcdruid) [4] of the Drupal Security Team Fixed By: * Oleh Shevchuk (alt.dev) [5] * Bohdan Artemchuk (bohart) [6] * Drew Webber (mcdruid) [7] of the Drupal Security Team Coordinated By: * Swan Kalata (akalata) [8] of the Drupal Security Team * Neil Drumm (drumm) [9] of the Drupal Security Team * Greg Knaddison (greggles) [10] of the Drupal Security Team * Drew Webber (mcdruid) [11] of the Drupal Security Team * Juraj Nemec (poker10) [12] of the Drupal Security Team * Jess (xjm) [13] of the Drupal Security Team ------------------------------------------------------------------------------ Contribution record [14] [1] https://www.drupal.org/project/content_synchronizer [2] https://www.drupal.org/drupal-security-team/security-risk-levels-defined [3] https://www.drupal.org/project/content_synchronizer/releases/4.1.1 [4] https://www.drupal.org/u/mcdruid [5] https://www.drupal.org/u/altdev [6] https://www.drupal.org/u/bohart [7] https://www.drupal.org/u/mcdruid [8] https://www.drupal.org/u/akalata [9] https://www.drupal.org/u/drumm [10] https://www.drupal.org/u/greggles [11] https://www.drupal.org/u/mcdruid [12] https://www.drupal.org/u/poker10 [13] https://www.drupal.org/u/xjm [14] https://new.drupal.org/contribution-record?source_link=https%3A//www.drupal....