CVE-2026-37503
6.9 · MEDIUMOverview
CVE-2026-37503 is a medium-severity vulnerability affecting v2board v2board. It was published on May 1, 2026 and has a CVSS 3.1 base score of 6.9 (MEDIUM).
This vulnerability has a CVSS 3.1 base score of 6.9, rated MEDIUM. It can be exploited remotely over the network. Some level of privileges is required for exploitation.
Technical 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.
Remediation
Check the references section for vendor advisories and patches from v2board. Update v2board to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
Affected Products
| Vendor | Product | Versions | Status |
|---|---|---|---|
| v2board | v2board | 0 | Affected |
Frequently Asked Questions
What is CVE-2026-37503?
CVE-2026-37503 is a medium-severity vulnerability affecting v2board v2board. It was published on May 1, 2026 and has a CVSS 3.1 base score of 6.9 (MEDIUM).
How severe is CVE-2026-37503?
This vulnerability has a CVSS 3.1 base score of 6.9, rated MEDIUM. It can be exploited remotely over the network. Some level of privileges is required for exploitation.
How do I fix or remediate CVE-2026-37503?
Check the references section for vendor advisories and patches from v2board. Update v2board to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
How can CyberStrike help with CVE-2026-37503?
CyberStrike's AI-powered security agents can automatically detect CVE-2026-37503 across your infrastructure using autonomous pentesting, DAST scanning, and HackBrowser. The platform continuously monitors for known vulnerabilities and provides actionable remediation guidance prioritized by real-world exploitability.
How CyberStrike Helps
AI agents map your attack surface to find vulnerabilities like this one.
Automated penetration testing that runs continuously, not just quarterly.
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Browser-based exploitation validates findings with real proof-of-concept.
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