CVE-2025-12466: Simple OAuth (OAuth2) & OpenID Connect - Critical - Access bypass - SA-CONTRIB-2025-114

Severity: high (CVSS 7.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.4% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2025-10-30 · updated 2026-10-08
Weakness: CWE-288

Description

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 products

Drupal Simple OAuth (OAuth2) & OpenID Connect: from 6.0.0 before 6.0.7 — fixed in 6.0.7

How to fix

Upgrade to a fixed version: Drupal Simple OAuth (OAuth2) & OpenID Connect 6.0.7. Check the vendor advisory for mitigations.

References

https://www.drupal.org/sa-contrib-2025-114

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