ci4-cms-erp ci4ms 0.28.5.0/0.31.0.0/0.31.2.0 Setting Install::index crlf injection

Summaryinfo

A vulnerability classified as problematic was found in ci4-cms-erp ci4ms. Affected by this issue is the function Install::index of the component Setting Handler. Such manipulation leads to crlf injection. This vulnerability is listed as CVE-2026-39394. The attack may be performed from remote. There is no available exploit. Upgrading the affected component is advised.

Detailsinfo

A vulnerability, which was classified as problematic, has been found in ci4-cms-erp ci4ms. Affected by this issue is the function Install::index of the component Setting Handler. The manipulation with an unknown input leads to a crlf injection vulnerability. Using CWE to declare the problem leads to CWE-93. The product uses CRLF (carriage return line feeds) as a special element, e.g. to separate lines or records, but it does not neutralize or incorrectly neutralizes CRLF sequences from inputs. Impacted is confidentiality, integrity, and availability. CVE summarizes:

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::index() controller reads the host POST parameter without any validation and passes it directly into updateEnvSettings(), which writes it into the .env file via preg_replace(). Because newline characters in the value are not stripped, an attacker can inject arbitrary configuration directives into the .env file. The install routes have CSRF protection explicitly disabled, and the InstallFilter can be bypassed when cache('settings') is empty (cache expiry or fresh deployment). This vulnerability is fixed in 0.31.4.0.

The advisory is available at github.com. This vulnerability is handled as CVE-2026-39394 since 04/07/2026. The exploitation is known to be difficult. The attack may be launched remotely. No form of authentication is required for exploitation. Technical details are known, but there is no available exploit.

Upgrading to version 0.31.4.0 eliminates this vulnerability.

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Productinfo

Type

• Content Management System

Vendor

• ci4-cms-erp

Name

• ci4ms

Version

• 0.28.5.0
• 0.31.0.0
• 0.31.2.0

Website

• Product: https://github.com/ci4-cms-erp/ci4ms/

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