CVE-2026-34559 Details
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, the application fails to properly sanitize user-controlled input when creating or editing blog tags. An attacker can inject a malicious JavaScript payload into the tag name field, which is then stored server-side. This stored payload is later rendered unsafely across public tag pages and administrative interfaces without proper output encoding, leading to stored cross-site scripting (XSS). This issue has been patched in version 0.31.0.0.
A stored cross-site scripting vulnerability has been identified in CI4MS, a CodeIgniter 4-based CMS skeleton, prior to version 0.31.0.0. The issue arises because the application does not properly sanitize user input when creating or editing blog tags. This allows an attacker to inject a malicious JavaScript payload into the tag name, which is then stored on the server. The injected payload is later rendered unsafely on public tag pages and administrative interfaces, lacking proper output encoding. As a result, the vulnerability leads to the execution of arbitrary JavaScript in the context of the user’s browser.
Users are advised to update to version 0.31.0.0, where this vulnerability has been patched.
Metrics
CVSS 4.0 Severity and Vector Strings:
No CVSS 4.0 data is available for this CVE.
CVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
CISA-ADP
Assessed Apr 2, 2026References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://github.com/ci4-cms-erp/ci4ms/security/advisories/GHSA-4333-387x-w245 | CISA-ADP | ExploitVendor Advisory |
| https://github.com/ci4-cms-erp/ci4ms/releases/tag/0.31.0.0 | [email protected] | Release Notes |
| https://github.com/ci4-cms-erp/ci4ms/security/advisories/GHSA-4333-387x-w245 | [email protected] | ExploitVendor Advisory |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-79 | Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| ci4-cms-erp ci4ms | < 0.31.0.0 |
CPE
Remediation
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Change History
5 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jun 17, 2026 | CVE Modified | [email protected] |
| Jun 17, 2026 | CVE Modified | CISA-ADP |
| Apr 13, 2026 | Initial Analysis | [email protected] |
| Apr 2, 2026 | CVE Modified | CISA-ADP |
| Apr 1, 2026 | New CVE Received | [email protected] |