CVE-2026-34559 - Vulnerability Analysis

Overview

CI4MS < 0.31.0.0 contains a stored cross-site scripting caused by improper sanitization of user input in blog tag creation/editing, letting attackers inject malicious JavaScript executed on public and admin pages, exploit requires user input submission.

Severity & Score

Impact

Attackers can execute malicious scripts in users' browsers, potentially stealing credentials or performing actions on behalf of users.

Mitigation

Update to version 0.31.0.0 or later.

References

• https://github.com/ci4-cms-erp/ci4ms/releases/tag/0.31.0.0
• https://github.com/ci4-cms-erp/ci4ms/security/advisories/GHSA-4333-387x-w245

Social Media Activity(1 post)

TheHackerWire

@thehackerwire

Apr 2, 2026

🔴 CVE-2026-34559 - Critical (9.1) 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... 🔗 https://www.thehackerwire.com/vulnerability/CVE-2026-34559/ #CVE #vulnerability #infosec #cybersecurity #security #Tenda #patchstack

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