CVE-2026-25509
Unknown Unknown - Not Provided
Email Enumeration Vulnerability in CI4MS Authentication Module

Publication date: 2026-02-03

Last updated on: 2026-02-10

Assigner: GitHub, Inc.

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.
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Meta Information
Published
2026-02-03
Last Modified
2026-02-10
Generated
2026-06-16
AI Q&A
2026-02-04
EPSS Evaluated
2026-06-15
NVD
CVE-2026-25509
Affected Vendors & Products
Showing 1 associated CPE
Vendor Product Version / Range
ci4-cms-erp ci4ms to 0.28.5.0 (exc)
Helpful Resources
Exploitability
CWE
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KEV
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CWE ID Description
CWE-203 The product behaves differently or sends different responses under different circumstances in a way that is observable to an unauthorized actor, which exposes security-relevant information about the state of the product, such as whether a particular operation was successful or not.
CWE-204 The product provides different responses to incoming requests in a way that reveals internal state information to an unauthorized actor outside of the intended control sphere.
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Executive Summary

The vulnerability in CI4MS, a CodeIgniter 4-based CMS skeleton, is an email enumeration issue in its authentication implementation prior to version 0.28.5.0.

An unauthenticated attacker can exploit this vulnerability by analyzing the application's response during the password reset process to determine whether a specific email address is registered in the system.

This issue was fixed in version 0.28.5.0.

Impact Analysis

This vulnerability allows an attacker to confirm the existence of email addresses registered in the system without authentication.

Such information can be used for targeted phishing attacks, social engineering, or to facilitate further attacks against known users.

The CVSS base score of 5.3 indicates a medium severity impact, with low complexity and no privileges or user interaction required.

Compliance Impact

I don't know

Detection Guidance

I don't know

Mitigation Strategies

To mitigate this vulnerability, you should upgrade CI4MS to version 0.28.5.0 or later, where the email enumeration issue during the password reset process has been patched.

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