Drupal issued security advisory SA-CONTRIB-2026-081 for a critical access bypass vulnerability in the Internationalization Single Sign-On contributed module. The flaw affects versions prior to 1.8.0, creating a risk that unauthorized users could bypass intended access controls in deployments using the module.
The Canadian Centre for Cyber Security republished the notice as AV26-738 and urged organizations to review Drupal’s guidance and apply the recommended update or mitigations. Administrators running the affected module have been directed to verify installed versions and move to a fixed release to reduce exposure.

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On July 22, 2026, Drupal published security advisory SA-CONTRIB-2026-081 for a critical access bypass vulnerability in the Internationalization Single Sign-On module. The issue affects versions prior to 1.8.0, and users were advised to apply the recommended updates or mitigations.
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