This module allows site builders to create so-called "theme\_rule" config entities.
Impact
This module allows site builders to create so-called "theme\_rule" config entities. These theme rules can render pages with different themes than the default when certain conditions match.
Source excerpt · OSVThis vulnerability is mitigated by the fact that an attacker must know the machine name of the theme rule.
Affected packages
Start with the recorded fix for your release branch. Check your installed version and test compatibility before upgrading. Fixing this advisory does not rule out other vulnerabilities in the release.
| Affected range | Recorded fix |
|---|---|
| Earlier releases before 1.2.1Ecosystem versions | 1.2.1 |
Version evidence: OSV · DRUPAL-CONTRIB-2026-012
View original version evidence (0 explicit versions)
Original source description
This module allows site builders to create so-called "theme_rule" config entities. These theme rules can render pages with different themes than the default when certain conditions match.
The module uses simple GET request to disable or enable theme rules, which allows attackers to disable or enable theme rules by tricking site administrators to click on links.
This vulnerability is mitigated by the fact that an attacker must know the machine name of the theme rule.