CVE-2025-12466
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.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- None
What an attacker can affect
- Confidentiality
- High
- Integrity
- None
- Availability
- None
Exploit likelihood
What each source reports
CVE List Score used
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.
- Record
CVE-2025-12466- CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N - Weakness
- CWE-288
- Updated
- 2026-11-02
EUVDEUVD-2025-36872
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.
- Record
EUVD-2025-36872- CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N - Updated
- 2026-11-02
GitHub AdvisoriesGHSA-jqmq-fpwv-p925
Drupal Simple OAuth (OAuth2) & OpenID Connect allows Authentication Bypass
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.
- Record
GHSA-jqmq-fpwv-p925- CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N - Weakness
- CWE-288
- Updated
- 2026-11-02
NVD
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.
- Record
CVE-2025-12466- CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N - Weakness
- CWE-288
- Updated
- 2026-11-02
OSV
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.
- Record
CVE-2025-12466- CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N - Weakness
- CWE-288
- Updated
- 2026-11-02
OSVGHSA-jqmq-fpwv-p925
Drupal Simple OAuth (OAuth2) & OpenID Connect allows Authentication Bypass
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.
- Record
GHSA-jqmq-fpwv-p925- CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N - Weakness
- CWE-288
- Updated
- 2026-11-02
OSVDRUPAL-CONTRIB-2025-114 No score
This module introduces an OAuth 2.0 authorization server, which can be configured to protect your Drupal instance with access tokens, or allow clients to request new access tokens and refresh them.
The module doesn't sufficiently respect granted scopes, it affects all access checks that are based on roles. For example: routes that have the _role requirement, can be bypassed with an access token.
This vulnerability is mitigated by the fact that an attacker must have the access token in possession and the user related to the token must have the associated (role requirement) roles assigned.
Update: the Affected versions field was updated to reflect that this vulnerability was present in the 6.0.0 release and fixed in 6.0.7. Earlier versions of this advisory incorrectly stated that other versions were affected.
- Record
DRUPAL-CONTRIB-2025-114- Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
drupal/simple_oauthPackagist |
6.0.0 up to 6.0.7 | 6.0.7 |
drupal/simple_oauthPackagist:https://packages.drupal.org/8 |
6.0.0 up to 6.0.7 | 6.0.7 |
History
| Recorded | Changed | Sources |
|---|---|---|
| first indexed | CVE List, EUVD, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2025-12466 is a high vulnerability (CVSS 7.5) in Drupal Simple Oauth (oauth2) & Openid Connect, published October 29, 2025. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.36%, the 29th percentile. Fixed in drupal/simple_oauth 6.0.7.