CVE-2026-37504: v2board

High severity, CVSS 7.5. EPSS: 0.4% chance of exploitation in the next 30 days.

Sensitive server_token exposed via GET parameter in V2Board thru 1.7.4. In app/Http/Controllers/Server/UniProxyController.php, the server authentication token is accepted via GET parameter transmission. The token appears in URLs such as /api/v1/server/UniProxy/user?token=SECRET, causing it to be recorded in web server access logs, browser history, HTTP Referer headers, and proxy/CDN logs. An attacker who gains access to any log source can extract the token and impersonate a proxy server node, potentially intercepting all user traffic.

Affected products

• v2board v2board: up to and including 1.7.4

Published 2026-05-01. Last modified 2026-06-17.