CVE-2026-34989

CI4MS is a CodeIgniter 4-based CMS skeleton that delivers a production-ready, modular architecture with RBAC authorization and theme support. Prior to 31.0.0.0, the application fails to properly sanitize user-controlled input when users update their profile name (e.g., full name / username). An attacker can inject a malicious JavaScript payload into their profile name, which is then stored server-side. This stored payload is later rendered unsafely in multiple application views without proper output encoding, leading to stored cross-site scripting (XSS). This vulnerability is fixed in 31.0.0.0.

CVSS v3 9.0 CRITICAL

9.0^/10

CVSS v3 : CRITICAL

Vector :

Exploitability : 2.3 / Impact : 6.0

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required LOW

User Interaction REQUIRED

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope CHANGED

References

Link	Resource
https://github.com/ci4-cms-erp/ci4ms/security/advisories/GHSA-vr2g-rhm5-q4jr	Exploit Vendor Advisory
https://github.com/ci4-cms-erp/ci4ms/security/advisories/GHSA-vr2g-rhm5-q4jr	Exploit Vendor Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:ci4-cms-erp:ci4ms:*:*:*:*:*:*:*:*

History

27 Apr 2026, 23:41

Type	Values Removed	Values Added
First Time		Ci4-cms-erp Ci4-cms-erp ci4ms
References	~~() https://github.com/ci4-cms-erp/ci4ms/security/advisories/GHSA-vr2g-rhm5-q4jr -~~	() https://github.com/ci4-cms-erp/ci4ms/security/advisories/GHSA-vr2g-rhm5-q4jr - Exploit, Vendor Advisory
CVSS	v2 : ~~unknown~~ v3 : ~~unknown~~	v2 : unknown v3 : 9.0
CPE		cpe:2.3:a:ci4-cms-erp:ci4ms::::::::

07 Apr 2026, 17:16

Type	Values Removed	Values Added
References	~~() https://github.com/ci4-cms-erp/ci4ms/security/advisories/GHSA-vr2g-rhm5-q4jr -~~	() https://github.com/ci4-cms-erp/ci4ms/security/advisories/GHSA-vr2g-rhm5-q4jr -

06 Apr 2026, 17:17

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-04-06 17:17

Updated : 2026-04-27 23:41

NVD link : CVE-2026-34989

Mitre link : CVE-2026-34989

CVE.ORG link : CVE-2026-34989

JSON object : View

Products Affected

ci4-cms-erp

ci4ms

CWE

CWE-79

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

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