Vulnerability in Wheels
CVE-2026-111443
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.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L.
EPSS exploit prediction
No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.
Affected products
Weakness classification (CWE)
References
- github.com/wheels-dev/wheels/security/advisories/GHSA-xcj9-wm25-4cg4 (vendor-advisory)
Frequently asked questions
- What is CVE-2026-111443?
- CVE-2026-111443 is a medium-severity vulnerability in Wheels, classified under CWE-348. CVSS score: 6.5/10. Published 2026-10-16.
- How severe is CVE-2026-111443?
- Medium severity. CVSS v3 base score is 6.5 out of 10.