CVE-2026-16639

9.8 criticalEPSS 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.

Severity

CVSS 3.1

9.8 critical

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS: 0.6% chance of exploitation in the next 30 days; higher than 50% of CVEs (scores of 2026-10-31)
CWE: CWE-288
Published: 2026-08-25
Modified: 2026-08-28
Record from: the NVD, synced 2026-10-19

References

https://www.drupal.org/sa-contrib-2026-081

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