What is CVE-2026-39393?

CVE-2026-39393 is a high-severity vulnerability in Ci4-cms-erp Ci4ms, classified under Missing Authentication for Critical Function. CVSS score: 8.1/10. Published 2026-04-08.

How severe is CVE-2026-39393?

High severity. CVSS v3 base score is 8.1 out of 10.

Auth bypass in Ci4-cms-erp Ci4ms

CVE-2026-39393

CI4MS is a CodeIgniter 4-based CMS skeleton that delivers a production-ready, modular architecture with RBAC authorization and theme support. Prior to 0.31.4.0, the install route guard in ci4ms relies solely on a volatile cache check (cach…

Vulnerability class: Broken Authentication

EPSS: 0.001 (16.9th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 8.1 (High). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H.

Affected products

Ci4-cms-erp Ci4ms — versions < 0.31.4.0

Weakness classification (CWE)

CWE-306 — Missing Authentication for Critical Function

References

https://github.com/ci4-cms-erp/ci4ms/security/advisories/GHSA-8rh5-4mvx-xj7j (x_refsource_CONFIRM)

Frequently asked questions

What is CVE-2026-39393?: CVE-2026-39393 is a high-severity vulnerability in Ci4-cms-erp Ci4ms, classified under Missing Authentication for Critical Function. CVSS score: 8.1/10. Published 2026-04-08.
How severe is CVE-2026-39393?: High severity. CVSS v3 base score is 8.1 out of 10.