CVE-2026-45270
HIGH Exploitation: PoC
8.7
CVSS 3.1
Description
CI4MS is a CodeIgniter 4-based content management system skeleton. Prior to version 0.31.9.0, the `Pages` backend module registers the `html_purify` validation rule on language-keyed page content but persists the raw, un-purified POST value into the database. The public renderer for pages (`Home::index()` → `app/Views/templates/default/pages.php`) emits `$pageInfo->content` without `esc()`, yielding stored XSS that fires for every public visitor of the affected page — including administrators. Because pages may be promoted to the site home page, the payload can be served at `/` and reach every visitor of the site. Version 0.31.9.0 patches the issue.
Metadata
Severity & Metrics
8.7
HIGH CVSS 3.1
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N
SSVC — CISA Coordinator
Affected products (1)
| Vendor | Product | Platform | Versions |
|---|---|---|---|
| ci4-cms-erp | ci4ms | — | < 0.31.9.0 |
Weakness (CWE)
| CWE | Source | Description |
|---|---|---|
| CWE-79 | cna | CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') |
CVSS scores (1)
| Score | Severity | Version | Source | Vector |
|---|---|---|---|---|
| 8.7 | HIGH | 3.1 | cna | CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N |
References (2)
- https://github.com/ci4-cms-erp/ci4ms/security/advisories/GHSA-gqr2-7hcg-rchf https://github.com/ci4-cms-erp/ci4ms/security/advisories/GHSA-gqr2-7hcg-rchf
- https://github.com/ci4-cms-erp/ci4ms/releases/tag/0.31.9.0 https://github.com/ci4-cms-erp/ci4ms/releases/tag/0.31.9.0