CVE-2026-39390
Description
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 Google Maps iframe setting (cMap field) in compInfosPost() sanitizes input using strip_tags() with an <iframe> allowlist and regex-based removal of on\w+ event handlers. However, the srcdoc attribute is not an event handler and passes all filters. An attacker with admin settings access can inject an <iframe srcdoc="..."> payload with HTML-entity-encoded JavaScript that executes in the context of the parent page when rendered to unauthenticated frontend visitors. This vulnerability is fixed in 0.31.4.0.
How to fix
- ci4-cms-erp/ci4ms0.31.4.0 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| ci4-cms-erp ci4ms | v ≤ 0.31.3.0 | — |
| ci4-cms-erp/ci4msPackagist | v < 0.31.4.0 | 0.31.4.0 |
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Attack Surface Management
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