Summaryinfo

A vulnerability has been found in ci4-cms-erp ci4ms and classified as problematic. Affected is an unknown function of the component Permission Management Page. The manipulation leads to cross site scripting. This vulnerability is uniquely identified as CVE-2026-34557. The attack is possible to be carried out remotely. No exploit exists. The affected component should be upgraded.

Detailsinfo

A vulnerability, which was classified as problematic, has been found in ci4-cms-erp ci4ms. This issue affects an unknown part of the component Permission Management Page. The manipulation with an unknown input leads to a cross site scripting vulnerability. Using CWE to declare the problem leads to CWE-79. The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users. Impacted is integrity. The summary by CVE is:

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 within group and role management functionality. Multiple input fields (three distinct group-related fields) can be injected with malicious JavaScript payloads, which are then stored server-side. These stored payloads are later rendered unsafely within privileged administrative views without proper output encoding, leading to stored cross-site scripting (XSS) within the role and permission management context. This issue has been patched in version 0.31.0.0.

It is possible to read the advisory at github.com. The identification of this vulnerability is CVE-2026-34557 since 03/30/2026. The exploitation is known to be easy. The attack may be initiated remotely. It demands that the victim is doing some kind of user interaction. The technical details are unknown and an exploit is not publicly available. The attack technique deployed by this issue is T1059.007 according to MITRE ATT&CK.

Upgrading to version 0.31.0.0 eliminates this vulnerability.

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Productinfo

Type

• Content Management System

Vendor

• ci4-cms-erp

Name

• ci4ms

Version

• 0.28.5.0

Website

• Product: https://github.com/ci4-cms-erp/ci4ms/

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