RCE in Sergejey Majordomo
CVE-2026-27174
MajorDoMo (aka Major Domestic Module) allows unauthenticated remote code execution via the admin panel's PHP console feature. An include order bug in modules/panel.class.php causes execution to continue past a redirect() call that lacks an…
Vulnerability class: RCE (Remote Code Execution)
EPSS: 0.854 (99.4th 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
- Sergejey Majordomo — versions 0
Weakness classification (CWE)
Public proof-of-concept exploits
References
- MajorDoMo Revisited: What I Missed in 2023 (third-party-advisory)
- Fix PR: sergejey/majordomo#1177 (patch)
- VulnCheck Advisory: MajorDoMo Unauthenticated Remote Code Execution via Admin Console Eval (third-party-advisory)
Frequently asked questions
- What is CVE-2026-27174?
- CVE-2026-27174 is a critical-severity vulnerability in Sergejey Majordomo, classified under Code Injection. CVSS score: 9.8/10. Published 2026-02-18.
- How severe is CVE-2026-27174?
- Critical severity. CVSS v3 base score is 9.8 out of 10.
- Is CVE-2026-27174 known to be exploited?
- 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.