Auth bypass in Yolanmees Spikster
CVE-2026-67594
Spikster through commit e1cdf8c contains a missing authentication vulnerability that allows unauthenticated remote attackers to access all API routes by exploiting the unattached CipiAuth middleware, which is registered but never applied to any route in the API routing configuration. Attackers can invoke approximately 50 unprotected API endpoints to enumerate and provision servers, reset root passwords, read and write arbitrary files on the host, and create database users.
Vulnerability class: Broken Authentication
EPSS: 0.005 (40.1th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
Affected products
- Yolanmees Spikster — versions 0
Weakness classification (CWE)
References
- disclosure@vulncheck.com (issue-tracking, technical-description)
- disclosure@vulncheck.com (third-party-advisory)
Frequently asked questions
- What is CVE-2026-67594?
- CVE-2026-67594 is a critical-severity vulnerability in Yolanmees Spikster, classified under Missing Authentication for Critical Function. CVSS score: 9.8/10. Published 2026-07-30.
- How severe is CVE-2026-67594?
- Critical severity. CVSS v3 base score is 9.8 out of 10.