VULNERABILITY INTELLIGENCE

CVE-2026-37503

CVSS score6.9 MEDIUM
EPSS probability0.19%
CISA KEVNot currently listed
Published2026-05-01
Last modified2026-06-17
CVSS vectorCVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:H/I:L/A:N

Description

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.

Weakness classification

  • 134c704f-9b21-4f2e-91b3-4a467353bcc0: CWE-79

Primary references