cvedb.io
CVE-2026-39390
MEDIUM · CVSS 5.5
EPSS exploitation probability: 0%
Published 2026-04-08T15:16:13.750 · Last modified 2026-06-17T10:42:02.303

Summary

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.

Affected products

ci4-cms-erp — ci4ms

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References

This product uses data from the NVD API but is not endorsed or certified by the NVD. Informational only; not professional security advice.