CodeIgniter 4-based CMS Skeleton Vulnerability in CI4MS
CVE-2026-39390

5.5MEDIUM

Key Information:

Vendor

Ci4-cms-erp

Status
Ci4ms
Vendor
CVE Published:
8 April 2026

What is CVE-2026-39390?

CI4MS, a CodeIgniter 4-based Content Management System, has a vulnerability that allows an authenticated admin user to inject malicious iframes into the platform. Specifically, prior to version 0.31.4.0, the sanitization process for the Google Maps iframe setting fails to adequately filter the 'srcdoc' attribute. This oversight permits the injection of an payload that carries HTML-entity-encoded JavaScript. When displayed to unauthenticated users on the frontend, this malicious script executes within the context of the parent page, potentially compromising user data and security. This vulnerability has been addressed in the latest release.

Affected Version(s)

ci4ms < 0.31.4.0

References

https://github.com/ci4-cms-erp/ci4ms/security/advisories/...
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CVSS V3.1

Score:
5.5
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
Low
Availability:
Low
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
High
User Interaction:
None
Scope:
Changed

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.