CVE-2026-37503 MEDIUM

CVE-2026-37503

Vendor N/A
Product n/a
Published May 1, 2026
Last update May 1, 2026
View on NVD All CVEs

CVSS base score

6.9/10
Attack vector Network
Attack complexity Low
Privileges required High
User interaction Required
Confidentiality High
Integrity Low

CVSS vector

CVSS:3.1/AC:L/AV:N/A:N/C:H/I:L/PR:H/S:C/UI:R

What the vulnerability does

01Description

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.

Key dates

02Disclosure timeline

May 1, 2026 CVE published
May 1, 2026 Record updated