OpenID Connect Client - Moderately critical - Improper authentication - SA-CONTRIB-2026-287

Authentication Bypass Using an Alternate Path or Channel vulnerability in Drupal OpenID Connect Client allows Authentication Bypass. This issue affects OpenID Connect Client versions: from 0.0.0 to 2.3.1.

Cross-site scripting (XSS) vulnerability in OpenID 5.x before 5.x-1.2, a module for Drupal, allows remote attackers to inject arbitrary web script or HTML via unspecified vectors.

Cross-site request forgery (CSRF) vulnerability in OpenID 5.x before 5x.-1.2, a module for Drupal, allows remote attackers to hijack the authentication of unspecified victims to delete OpenID identities via unknown vectors.

The OpenID 5.x-1.0 and earlier module for Drupal does not properly verify the claimed_id returned by an OpenID provider, which allows remote OpenID providers to spoof OpenID authentication for domains associated with other providers.

OpenID Connect / OAuth client - Moderately critical - Server-side request forgery, Information disclosure - SA-CONTRIB-2026-025

Server-Side Request Forgery (SSRF) vulnerability in Drupal OpenID Connect / OAuth client allows Server Side Request Forgery.This issue affects OpenID Connect / OAuth client: from 0.0.0 before 1.5.0.

OpenID Connect / OAuth client - Moderately critical - Access bypass - SA-CONTRIB-2026-026

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.

OpenID Connect / OAuth client - Less critical - Access bypass - SA-CONTRIB-2026-027

Improper Handling of Case Sensitivity vulnerability in Drupal OpenID Connect / OAuth client allows Privilege Escalation.This issue affects OpenID Connect / OAuth client: from 0.0.0 before 1.5.0.

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

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.

The OpenID module in Drupal 6.x before 6.18, and the OpenID module 5.x before 5.x-1.4 for Drupal, violates the OpenID 2.0 protocol by not ensuring that fields are signed, which allows remote attackers to bypass authentication by leveraging an assertion from an OpenID provider.

The OpenID module in Drupal 6.x before 6.18, and the OpenID module 5.x before 5.x-1.4 for Drupal, violates the OpenID 2.0 protocol by not checking for reuse of openid.response_nonce values, which allows remote attackers to bypass authentication by leveraging an assertion from an OpenID provider.

The OpenID module in Drupal 6.x before 6.18, and the OpenID module 5.x before 5.x-1.4 for Drupal, violates the OpenID 2.0 protocol by not verifying the openid.return_to value, which allows remote attackers to bypass authentication by leveraging an assertion from an OpenID provider.