CVE-2026-39391
An admin with blacklist privileges can inject arbitrary JavaScript that executes in the browser of any other admin who views the user management page.
Does this matter?
Lower severity and a low EPSS score (0.23%). Track it; it rarely justifies an emergency change on its own.
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 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.
- CVSS 3.1
- 4.8 MEDIUMCVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N
- EPSS
- 0.23% probability · 14th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-79
- Affected
- ci4-cms-erp/ci4ms
- Source
- security-advisories@github.com
References
- https://github.com/ci4-cms-erp/ci4ms/security/advisories/GHSA-7cm9-v848-cfh2Exploit, Vendor Advisory
- https://github.com/ci4-cms-erp/ci4ms/security/advisories/GHSA-7cm9-v848-cfh2Exploit, Vendor Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.