CVE-2026-25509: CI4MS Vulnerable to User Email Enumeration via Password Reset Flow

Severity: medium (CVSS 5.3 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.4% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-02-03 · updated 2026-06-17
Weakness: CWE-204

Description

CI4MS is a CodeIgniter 4-based CMS skeleton that delivers a production-ready, modular architecture with RBAC authorization and theme support. Prior to version 0.28.5.0, the authentication implementation in CI4MS is vulnerable to email enumeration. An unauthenticated attacker can determine whether an email address is registered in the system by analyzing the application's response during the password reset process. This issue has been patched in version 0.28.5.0.

Affected products

ci4-cms-erp ci4ms: before 0.28.5.0 — fixed in 0.28.5.0

How to fix

Upgrade to a fixed version: ci4-cms-erp ci4ms 0.28.5.0. Check the vendor advisory for mitigations.

References

Get alerted when CVE-2026-25509 or the next vulnerability affects your stack