CRLF Injection Affecting ci4-cms-erp/ci4ms package, versions <0.31.4.0
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-PHP-CI4CMSERPCI4MS-15989825
- published12 Apr 2026
- disclosed8 Apr 2026
- creditoffset
Introduced: 8 Apr 2026
CVE-2026-39394 (opens in a new tab)How to fix?
Upgrade ci4-cms-erp/ci4ms to version 0.31.4.0 or higher.
Overview
ci4-cms-erp/ci4ms is a composer create-project ci4-cms-erp/ci4ms
Affected versions of this package are vulnerable to CRLF Injection via the host parameter in the install controller, which is not validated for newline characters before being written to the .env file. An attacker can inject arbitrary configuration directives and override application settings by submitting specially crafted POST requests containing newline characters. This can be exploited remotely without authentication, especially when CSRF protection is disabled and the install endpoint is accessible, such as during a fresh deployment or after cache expiry. This is only exploitable if the install endpoint is accessible (i.e., during a fresh install or when the cache is empty and .env does not exist or cache('settings') is not populated).