medium6.9
CVE-2026-37503
Cross-Site Scripting (XSS) in V2Board thru 1.7.4.
Impact
Cross-Site Scripting (XSS) in V2Board thru 1.7.4. The custom_html field in theme configuration is rendered using Blade unescaped output in public/theme/v2board/dashboard.blade.php. An admin can inject arbitrary JavaScript via the saveThemeConfig API. All site visitors execute the payload, enabling cookie theft, session hijacking, or phishing.
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| V2board | V2board | through 1.7.4 |