EUVD-2026-17214
GHSA-v77r-xg3p-75g7
CVSS Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:L/A:L
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 version 0.31.0.0, the application fails to properly sanitize user-controlled input within the Methods Management functionality when creating or managing application methods/pages. Multiple input fields accept attacker-controlled JavaScript payloads that are stored server-side without sanitization or output encoding. These stored values are later rendered directly into administrative interfaces and global navigation components without proper encoding, resulting in Stored DOM-Based Cross-Site Scripting (XSS). This issue has been patched in version 0.31.0.0.
Analysis
Stored Cross-Site Scripting in CI4MS methods management allows authenticated users to inject malicious JavaScript into administrative interfaces and global navigation, affecting all users including administrators. The vulnerability affects CI4MS versions before 0.31.0.0 with a CVSS score of 9.1 due to scope change (C) enabling privilege escalation. …
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Remediation
Within 24 hours: Inventory all CI4MS deployments and identify current version numbers across production and non-production environments. Within 7 days: Apply vendor-released patch to upgrade all instances to CI4MS version 0.31.0.0 or later, beginning with production systems and validating functionality post-deployment. …
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