EUVD-2026-20485
GHSA-fjpj-6qcq-6pw2
CVSS Vector
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:L/I:L/A:N
Lifecycle Timeline
4Tags
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 Pages module does not apply the html_purify validation rule to content fields during create and update operations, while the Blog module does. Page content is stored unsanitized in the database and rendered as raw HTML on the public frontend via echo $pageInfo->content. An authenticated admin with page-editing privileges can inject arbitrary JavaScript that executes in the browser of every public visitor viewing the page. This vulnerability is fixed in 0.31.4.0.
Analysis
Stored cross-site scripting (XSS) in CI4MS prior to 0.31.4.0 allows authenticated administrators with page-editing privileges to inject arbitrary JavaScript into page content that executes in the browsers of all public visitors. The Pages module fails to apply HTML sanitization during content creation and updates, storing unsanitized HTML directly in the database and rendering it without escaping on the frontend, whereas the Blog module correctly implements this protection. …
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