Description
October is a Content Management System (CMS) and web platform. Prior to versions 3.7.13 and 4.0.12, a cross-site scripting (XSS) vulnerabilities was identified in October CMS backend configuration forms. A user with the Customize Backend Styles permission could inject malicious HTML/JS into the stylesheet input at Styles from Branding & Appearance settings. A specially crafted input could break out of the intended <style> context, allowing arbitrary script execution across backend pages for all users. This issue has been patched in versions 3.7.13 and 4.0.12.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| octobercms | october | >= 4.0.0, < 4.0.12, < 3.7.13 | — |
Affected packages
| Ecosystem | Package | Affected | Fixed | Record |
|---|---|---|---|---|
| Packagist | october/system | < 3.7.13 | 3.7.13 | GHSA-wvpq-h33f-8rp6 |
| Packagist | october/system | >= 4.0.0, < 4.0.12 | 4.0.12 | GHSA-wvpq-h33f-8rp6 |