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 when creating or editing blog tags. An attacker can inject a malicious JavaScript payload into the tag name field, which is then stored server-side. This stored payload is later rendered unsafely across public tag pages and administrative interfaces without proper output encoding, leading to stored cross-site scripting (XSS). This issue has been patched in version 0.31.0.0.
Exploitability
AV:NAC:LPR:LUI:NScope
S:CImpact
C:HI:LA:L9.1/CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:L/A:LInjection