DOM-Based Cross-Site Scripting in CI4MS CodeIgniter CMS
CVE-2026-34565

9.1CRITICAL

Key Information:

Vendor

Ci4-cms-erp

Status
Ci4ms
Vendor
CVE Published:
1 April 2026

What is CVE-2026-34565?

CI4MS, a modular content management system built on CodeIgniter 4, suffers from a stored DOM-based cross-site scripting vulnerability. Prior to version 0.31.0.0, the application inadequately sanitizes user input within the Menu Management feature. Specifically, post data added to navigation menus can be stored without proper output encoding, leading to unsafe rendering in both administrative and public interfaces. This flaw poses risks of unauthorized user actions and data exposure. The issue has been resolved in the latest version, 0.31.0.0.

Affected Version(s)

ci4ms < 0.31.0.0

References

https://github.com/ci4-cms-erp/ci4ms/security/advisories/...
x_refsource_CONFIRM
https://github.com/ci4-cms-erp/ci4ms/releases/tag/0.31.0.0
x_refsource_MISC

CVSS V3.1

Score:
9.1
Severity:
CRITICAL
Confidentiality:
High
Integrity:
Low
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
None
Scope:
Changed

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.