CVE-2026-37503
CVSS Score
6.9
EPSS Score
0.0%
EPSS Percentile
0th
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.
| Vendor | n/a |
| Product | n/a |
| Published | May 1, 2026 |
| Last Updated | May 1, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AC:L/AV:N/A:N/C:H/I:L/PR:H/S:C/UI:R Attack Vector
Network
Attack Complexity
Low
Privileges Required
High
User Interaction
Required
Scope
Changed
Confidentiality
High
Integrity
Low
Availability
None
Affected Versions
n/a / n/a
n/a