CVE-2026-39391
CI4MS has Stored XSS via Unescaped Blacklist Note in Admin User List
CVSS Score
4.8
EPSS Score
0.0%
EPSS Percentile
0th
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 blacklist (ban) note parameter in UserController::ajax_blackList_post() is stored in the database without sanitization and rendered into an HTML data-note attribute without escaping. An admin with blacklist privileges can inject arbitrary JavaScript that executes in the browser of any other admin who views the user management page. This vulnerability is fixed in 0.31.4.0.
| CWE | CWE-79 |
| Vendor | ci4-cms-erp |
| Product | ci4ms |
| Published | Apr 8, 2026 |
| Last Updated | Apr 8, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N Attack Vector
Network
Attack Complexity
Low
Privileges Required
High
User Interaction
Required
Scope
Changed
Confidentiality
Low
Integrity
Low
Availability
None
Affected Versions
ci4-cms-erp / ci4ms
< 0.31.4.0