CVE-2025-27921: Srimax Output Messenger

Medium severity, CVSS 6.1. EPSS: 0.4% chance of exploitation in the next 30 days.

A reflected cross-site scripting (XSS) vulnerability was discovered in Output Messenger before 2.0.63, where unsanitized input could be injected into the web application’s response. This vulnerability occurs when user-controlled input is reflected back into the browser without proper sanitization or encoding.

Affected products

• Srimax Output Messenger: before 2.0.63 (fixed in 2.0.63)

Published 2025-05-05. Last modified 2026-06-17.