---
id: CVE-2025-12466
title: >-
  Authentication Bypass Using an Alternate Path or Channel vulnerability in
  Drupal Simple OAuth (OAuth2) & OpenID Connect allows Authentication
  Bypass.This issue affects Simple OAuth (OAuth2) & OpenID Connect: from 6.0.0
  before 6.0.7.
summary: >-
  Authentication Bypass Using an Alternate Path or Channel vulnerability in
  Drupal Simple OAuth (OAuth2) & OpenID Connect allows Authentication
  Bypass.This issue affects Simple OAuth (OAuth2) & OpenID Connect: from 6.0.0
  before 6.0.7.
severity: high
cvss: 7.5
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N'
cwe:
  - CWE-288
vendor: simple_oauth_project
product: simple_oauth
affected:
  - 'simple_oauth >= 6.0.0, < 6.0.7'
patched:
  - simple_oauth 6.0.7
published: '2025-10-30'
updated: '2026-10-08'
sourceUpdated: '2026-10-08T10:10:00.227'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2025-12466'
references:
  - url: 'https://www.drupal.org/sa-contrib-2025-114'
    label: mlhess@drupal.org
tags:
  - nvd
epss: 0.0036
epssPercentile: 0.27673
ingestedAt: '2026-10-08T10:28:18.383Z'
---

## Overview

Authentication Bypass Using an Alternate Path or Channel vulnerability in Drupal Simple OAuth (OAuth2) & OpenID Connect allows Authentication Bypass.This issue affects Simple OAuth (OAuth2) & OpenID Connect: from 6.0.0 before 6.0.7.

## Affected

- `simple_oauth >= 6.0.0, < 6.0.7`

## Remediation

Upgrade past the affected range:

- `simple_oauth 6.0.7`