CVE-2026-34567: CI4MS is a CodeIgniter 4-based CMS skeleton that delivers a production-ready, modular architecture with RBAC authorization and theme support. Prior to version…

PriorityP343critical9CVSS 3.1

AVNACLPRLUIRSCCHIHAH

EPSS

0.27%

18.4th percentile

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 posts within the Categories section. An attacker can inject a malicious JavaScript payload into the Categories content, which is then stored server-side. This stored payload is later rendered unsafely when the Categories are viewed via blog posts, without proper output encoding, leading to stored cross-site scripting (XSS). This issue has been patched in version 0.31.0.0.

Affected

2 ranges

Vendor	Product	Version range	Fixed in
ci4-cms-erp	ci4ms	< 0.31.0.0	0.31.0.0
ci4-cms-erp	ci4ms	>= 0 < 0.31.0.0	0.31.0.0

Stop checking back — get the weekly exploitation signal.

Every Monday: what got weaponized or added to CISA KEV in the last seven days — each CVE cross-linked to its PoC, Nuclei template, and detection rule. Free, one email a week, unsubscribe in one click.