SA-CONTRIB-2026-306: Critical severity composer/drupal/scheduler vulnerability
Published Nov 4, 2026
·Updated
This module enables you to schedule content to be published or unpublished at a certain time in the future. The module doesn't sufficiently check if a user has permission to change publication or unpublication dates. This might cause certain information to be publicly disclosed ahead of the scheduled time, or content to become inaccessible earlier or later than planned. This vulnerability is mitigated by the fact that an attacker must already have permission to edit the affected content, and the content must be editable through a web services API like JSON:API or REST.
Credit
Marcus Johansson (marcus_johansson), Rodrigo Cabo (rodrigo-cabo)
Affected Software
1 affected componentFixes available
composer/drupal/scheduler<8.x-1.7, <2.2.3, <2.3.1
8.x-1.72.2.32.3.1
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade
composer/drupal/schedulerto a version that resolves this vulnerability.Fixed in 8.x-1.7Fixed in 2.2.3Fixed in 2.3.1
Event History
Nov 4, 2026
Advisory Published
via Drupal·12:00 AM
Data Sourced
via Drupal·12:00 AM
DescriptionSeverityAffected Software