DRUPAL-CONTRIB-2026-284

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    DRUPAL-CONTRIB-2026-284

    Published: 28 Oct 2026Last Modified: 28 Oct 2026

    Summary:

    Details: This module enables you to log in to your Drupal site using any OAuth 2.0 or OpenID Connect compliant identity provider. The module doesn't sufficiently check access on a configuration route, or check whether the identity provider has verified the email address it returns. Together, these let an attacker log in as any existing user whose email address they know. This vulnerability is mitigated by the fact that an attacker must have an account with an identity provider the site is configured to use. They must also be able to set the value of at least one attribute that provider returns, such as a username.

    References: https://www.drupal.org/sa-contrib-2026-284

    Affected packages

    Package

    Name: drupal/oauth_login_oauth2

    Purl: pkg:composer/drupal/oauth_login_oauth2?repository_url=https:%2F%2Fpackages.drupal.org%2F8

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -3.1.1

    Affected versions

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High
    DRUPAL-CONTRIB-2026-284 | CVE-DB