Authentication Bypass in Drupal OpenID Connect OAuth Client

Publication date: 2026-03-26

Last updated on: 2026-04-01

Assigner: Drupal.org

Description

Authentication Bypass Using an Alternate Path or Channel vulnerability in Drupal OpenID Connect / OAuth client allows Authentication Bypass.This issue affects OpenID Connect / OAuth client: from 0.0.0 before 1.5.0.

CVSS Scores

EPSS Scores

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Meta Information

Published

2026-03-26

Last Modified

2026-04-01

Generated

2026-07-06

AI Q&A

2026-03-27

EPSS Evaluated

2026-07-05

NVD

CVE-2026-3531

EUVD

EUVD-2026-16387

Affected Vendors & Products

Vendor	Product	Version / Range
bojanz	openid_connect_/_oauth_client	to 8.x-1.5 (exc)

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-288	The product requires authentication, but the product has an alternate path or channel that does not require authentication.

Attack-Flow Graph

Executive Summary

This vulnerability is an Authentication Bypass issue in the Drupal OpenID Connect / OAuth client module. It allows an attacker to bypass the normal authentication process by using an alternate path or channel, effectively gaining unauthorized access.

Impact Analysis

The impact of this vulnerability is that an attacker could gain unauthorized access to a Drupal site using the OpenID Connect / OAuth client module. This could lead to unauthorized actions, data exposure, or compromise of the affected system.

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