DRUPAL-CORE-2026-007

At a glance

Published: 2026-06-17 18:57 UTC
Updated: 2026-09-10 03:45 UTC
CVE: CVE-2026-55806
Aliases: BIT-drupal-2026-55806

Description

Drupal core ships a `rebuild.php` front controller that can be used to rebuild Drupal (clearing the caches and rebuilding the container) when the site is in an unexpected condition. This script doesn't correctly check the Host header against the list of trusted host patterns. This could result in cache poisoning or a redirect to an attacker-controlled domain.

Affected packages

Package	Versions
Packagist · drupal/core	introduced 0, fixed 10.5.12 ; introduced 10.6.0, fixed 10.6.11 ; introduced 11.2.0, fixed 11.2.14 ; introduced 11.3.0, fixed 11.3.12 ; introduced 11.0.0, fixed 11.1.0 ; introduced 11.1.0, fixed 11.2.0

References

https://www.drupal.org/sa-core-2026-007 WEB

Sources

Source	Licence
OSV.dev	See osv.dev/data for this database's licence