CVE-2026-37503
MEDIUM
MEDIUM
Priority: 0.01
BB Relevance:
45/100
Published: 2026-05-01
Modified: 2026-11-11
First seen: 2026-11-11
Status: active
Attack Surface
Network
Low Complexity
Scope Change
CVSS Vector Breakdown
AV:
Network
AC:
Low
PR:
High
UI:
Required
S:
Changed
C:
Low
I:
Low
A:
None
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 (1)
References & Advisories (2)
Product
Exploit
Third Party Advisory