CVE-2026-16639 - Vulnerability Details - OpenCVE

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.

No CVSS v4.0

Attack Vector Network

Attack Complexity Low

Privileges Required None

Scope Unchanged

Confidentiality Impact High

Integrity Impact High

Availability Impact High

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

Exploitation none

Automatable yes

Technical Impact total

Vendors	Products
Drupal	Internationalization Single Sign-on

No data.

No data.

References

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

History

Fri, 28 Aug 2026 21:00:00 +0000

Type	Values Removed	Values Added
First Time appeared		Drupal Drupal internationalization Single Sign-on
Vendors & Products		Drupal Drupal internationalization Single Sign-on

Wed, 26 Aug 2026 16:30:00 +0000

Type	Values Removed	Values Added
Metrics		cvssV3_1 `{'score': 9.8, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H'}` ssvc `{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}`

Tue, 25 Aug 2026 22:45:00 +0000

Type	Values Removed	Values Added
Description		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.
Title		Internationalization Single Sign-On - Critical - Access bypass - SA-CONTRIB-2026-081
Weaknesses		CWE-288
References		https://www.drupal.org/sa-contrib-2026-081

MITRE

Status: PUBLISHED

Assigner: drupal

Published: 2026-08-25T22:22:12.799Z

Updated: 2026-08-26T15:23:15.811Z

Reserved: 2026-07-22T17:06:41.738Z

Link: CVE-2026-16639

Vulnrichment

Updated: 2026-08-26T15:23:07.057Z

NVD

Status : Awaiting Analysis

Published: 2026-08-25T23:16:56.673

Modified: 2026-08-28T15:29:44.967

Link: CVE-2026-16639

Redhat

No data.

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