# CVE-2026-114542: Drupal Simple OAuth permission cache reuse privilege escalation

Source: https://junglewise.ai/threats/cve-2026-114542-drupal-contrib-2026-242-this-module-introduces-an-oauth-2-0  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-10-30. Updated: 2026-10-22  
License: CC BY 4.0 with a link back

CVE-2026-114542 · Severity: info · Published 2026-10-30

The Simple OAuth module for Drupal is an authentication add-on that manages access tokens for API requests. Versions 6.1.0 through 6.1.2 incorrectly cache user permissions in a way that allows one user's access token to be reused to gain the permissions of another user's token with the same scopes, potentially including administrator access. An attacker must obtain a valid OAuth token from someone with higher privileges to exploit this vulnerability; they cannot create the conditions themselves.

Technologies: [Packagist:Https://Packages.Drupal.Org/8 Drupal/Simple Oauth](https://junglewise.ai/threats/technologies/drupal-simple-oauth). Vendors: [Drupal](https://junglewise.ai/threats/vendors/drupal), [Packagist:Https://Packages.Drupal.Org/8](https://junglewise.ai/threats/vendors/packagist-https-packages-drupal-org-8).

## Quick answers

**Is CVE-2026-114542 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-114542 being exploited in the wild.

**How severe is CVE-2026-114542?** Informational severity, published 30 October 2026.

**Which products and versions are affected?** Drupal Simple OAuth 6.1.0 to 6.1.2; Packagist:Https://Packages.Drupal.Org/8 Drupal/Simple Oauth ECOSYSTEM:introduced=6.1.0,fixed=6.1.3.

**Is there a fix for CVE-2026-114542?** Yes. Packagist:Https://Packages.Drupal.Org/8 Drupal/Simple Oauth: upgrade to 6.1.3 or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**How is CVE-2026-114542 attacked?** It is attacked over the network, in a software library.

**Am I affected by CVE-2026-114542?** Check whether you run Drupal Simple OAuth or Packagist:Https://Packages.Drupal.Org/8 Drupal/Simple Oauth at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## How to fix

- Packagist:Https://Packages.Drupal.Org/8 Drupal/Simple Oauth: upgrade to 6.1.3 or later

## Technical details

The vulnerability stems from improper caching of token permissions in the Simple OAuth module. When a token with certain scopes is used, its associated permissions are cached in a way that can be reused by a different user's token with identical scopes, allowing privilege escalation. This requires an attacker to already possess a valid OAuth2 token and for a more privileged user's token with the same scopes to have been used first; the issue does not affect Drupal's User 1 account unless security.enable_super_user is explicitly disabled.

## Affected products

- Drupal Simple OAuth 6.1.0 to 6.1.2

## Identifiers

- CVE-2026-114542
- DRUPAL-CONTRIB-2026-242

## Timeline

- 2026-10-21: disclosed

## References

- [https://www.drupal.org/u/kingdutch](https://www.drupal.org/u/kingdutch)
- [https://www.drupal.org/u/jonathanshaw](https://www.drupal.org/u/jonathanshaw)

## Related threats

- [Drupal Simple OAuth insufficient access restriction in consumer configuration](https://junglewise.ai/threats/cve-2026-122058-drupal-contrib-2026-296-this-module-introduces-an-oauth-2-0)
- [Drupal Simple OAuth (OAuth2) & OpenID Connect allows Authentication Bypass](https://junglewise.ai/threats/cve-2025-12466-drupal-contrib-2025-114-this-module-introduces-an-oauth-2-0)
- [DRUPAL-CONTRIB-2022-002 - This module enables you to implement OAuth 2.0 authentication for Drupal. The module doesn't…](https://junglewise.ai/threats/drupal-contrib-2022-002-this-module-enables-you-to-implement-oauth-2-0-566d5e99)