CVE-2026-16639
CriticalCVSS 9.8Exploitation Probability (EPSS)
Low risk27th percentile - higher than 27% of all known CVEs
Summary
Authentication Bypass Using an Alternate Path or Channel vulnerability in Drupal Internationalization Single Sign-On allows Authentication Bypass. This issue affects versions from 0.0.0 to 1.8.0.
Risk Assessment
An attacker may gain access to accounts without proper authentication, potentially leading to unauthorized system access.
Recommendation
Update the Internationalization Single Sign-On module to a version above 1.8.0 that includes the fix.
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Original NVD description (English source)
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.
Vulnerability data from NVD (NIST) · CISA KEV · EPSS