---
id: "CVE-2026-114542"
kind: "vulnerability"
aliases: ["CVE-2026-114542"]
title: "Drupal Simple OAuth: browser cache can expose sensitive token data"
severity: "unknown"
cvss: null
epss: null
exploited: false
status: "open"
category: "package"
products: []
ecosystems: []
tags: ["drupal", "oauth2", "openid-connect", "package", "simple-oauth"]
not_affected_if: ["unknown"]
published_at: "2026-10-30T04:18:13+00:00"
first_seen_at: "2026-10-30T04:28:37+00:00"
updated_at: "2026-10-30T04:29:53+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-114542", "first_seen_at": "2026-10-30T04:28:37+00:00"}]
---

# Drupal Simple OAuth: browser cache can expose sensitive token data

Simple OAuth (OAuth2) & OpenID Connect for Drupal versions 6.1.0 to 6.1.3 can cause sensitive information to be stored in the web browser cache. An attacker with access to a shared or local browser cache may be able to read that data.

_Summary, check and fix written by a model from the sources; labelled as such._

## How to check

- Check the installed version of the `drupal/simple_oauth` module with `composer show drupal/simple_oauth` and see whether it falls in `6.1.0` to `6.1.3`.
- Review the response headers for OAuth and OpenID Connect endpoints for cache-control settings; the sources do not say which headers are affected.

## Fix

- Move `drupal/simple_oauth` to a version later than `6.1.3`; the sources do not name the fixed version.

## Timeline

- 2026-10-30T04:28:37+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-114542

## From the sources

Use of Web Browser Cache Containing Sensitive Information vulnerability in Drupal Simple OAuth (OAuth2) & OpenID Connect allows Exploiting Incorrectly Configured Access Control Security Levels. This issue affects Simple OAuth (OAuth2) & OpenID Connect versions: from 6.1.0 to 6.1.3.

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