CVE-2026-34571

9.9 CRITICAL
Published: April 01, 2026 Modified: April 06, 2026
View on NVD

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, a Stored Cross-Site Scripting (Stored XSS) vulnerability exists in the backend user management functionality. The application fails to properly sanitize user-controlled input before rendering it in the administrative interface, allowing attackers to inject persistent JavaScript code. This results in automatic execution whenever backend users access the affected page, enabling session hijacking, privilege escalation, and full administrative account compromise. This issue has been patched in version 0.31.0.0.

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CVSS v3.x Details

0.0 Low Medium High Critical 10.0
Vector String
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

References to Advisories, Solutions, and Tools

Patch Vendor Advisory Exploit Third Party Advisory
https://github.com/ci4-cms-erp/ci4ms/releases/tag/0.31.0.0
Source: security-advisories@github.com
Release Notes
https://github.com/ci4-cms-erp/ci4ms/security/advisories/GHSA-fc4p-p49v-r948
Source: security-advisories@github.com
Exploit Vendor Advisory
https://github.com/ci4-cms-erp/ci4ms/security/advisories/GHSA-fc4p-p49v-r948
Source: 134c704f-9b21-4f2e-91b3-4a467353bcc0
Exploit Vendor Advisory

3 reference(s) from NVD

Quick Stats

CVSS v3 Score
9.9 / 10.0
EPSS (Exploit Probability)
0.1%
17th percentile
Exploitation Status
Not in CISA KEV

Weaknesses (CWE)

Affected Vendors

ci4-cms-erp