CVE-2026-34565CRITICAL 9.0EPSS p18.3%
CVE-2026-34565CVE-2026-34565
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 adding Posts to navigation menus through the Menu Management functionality. Post-related data selected via the Posts section is stored server-side and rendered without proper output encoding. These stored values are later rendered unsafely within administrative dashboards and public-facing navigation menus, resulting in stored DOM-based cross-site scripting (XSS). This issue has been patched in version 0.31.0.0.
Scoring
| CVSS 3.1 | 9.0 (CRITICAL) |
| Vector | CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H |
| EPSS | 0.27% probability of exploitation · percentile 18.3% · 2026-06-19T12:03:05Z |
| Published | 2026-04-01 |
| Last modified | 2026-04-06 |
Underlying weaknesses· 1
References
1
| Type | Target | Confidence | Tier |
|---|---|---|---|
| Weakness | Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')cwe-79 | 0% | live |
Related by meaning· 6
Nearest entities by semantic similarity across the cs-graph corpus.