CVE-2026-16639criticalCWE-288

CVE-2026-16639: critical vulnerability in Drupal Internationalization Single Sign-On

Internationalization Single Sign-On - Critical - Access bypass - SA-CONTRIB-2026-081

Published · Updated

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28Vexday Risk Score

No sign of exploitation. No public exploitation artifact known so far.

ssvc Trackcvss 9.8epss 0.6%
Authentication Bypass Using an Alternate Path or Channel vulnerability in Drupal Internationalization Single Sign-On allows Authentication Bypass. This issue affects Internationalization Single Sign-On versions: from 0.0.0 to 1.8.0.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Affected products
Drupal · Internationalization Single Sign-On