---
id: CVE-2026-111443
title: >-
  Wheels 4.0.6 through 4.1.2 lets an unauthenticated client switch a request
  into a separate test application context, including in production, by
  supplying an X-Wheels-Test-Context header or WHEELS_TEST_CONTEXT cookie with
  any value, or i…
summary: >-
  Wheels 4.0.6 through 4.1.2 lets an unauthenticated client switch a request
  into a separate test application context, including in production, by
  supplying an X-Wheels-Test-Context header or WHEELS_TEST_CONTEXT cookie with
  any value, or i…
severity: medium
cvss: 6.5
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L'
cwe:
  - CWE-348
vendor: Wheels
product: Wheels
affected:
  - Wheels >= 4.0.6 < 4.2.0
published: '2026-10-16'
updated: '2026-10-16'
sourceUpdated: '2026-10-16T15:19:36.177'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-111443'
references:
  - url: >-
      https://github.com/wheels-dev/wheels/security/advisories/GHSA-xcj9-wm25-4cg4
    label: cve@mitre.org
tags:
  - nvd
  - cve.org
epss: 0.0016
epssPercentile: 0.05146
ssvc:
  exploitation: none
  automatable: 'yes'
  technicalImpact: partial
  timestamp: '2026-10-16T15:01:05.585807Z'
ingestedAt: '2026-10-16T03:57:49.273Z'
---

## Overview

Wheels 4.0.6 through 4.1.2 lets an unauthenticated client switch a request into a separate test application context, including in production, by supplying an X-Wheels-Test-Context header or WHEELS_TEST_CONTEXT cookie with any value, or including a test-runner path anywhere in the URL, even the query string. The alternate application uses the same configuration, environment, datasource and debug settings: this is not an authentication bypass or data/debug escalation. It can bypass maintenance mode enabled only at runtime, provide a second set of in-memory rate-limit counters, and trigger additional application-startup side effects and memory use. This is fixed in 4.2.0.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.