CVE-2026-37503

Medium

Open

TLP:CLEAR

NVD CVE.org

Phishing

AI Analysis

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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.

Details

CVSS Score: 6.9
EPSS Score ⓘ: 0.19%

9th percentile
CVSS Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:H/I:L/A:N
Confidence: 90%
Published: May 1, 2026

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