CVE-2026-49102: Webmin

Medium severity, CVSS 6.1. EPSS: 0.3% chance of exploitation in the next 30 days.

Webmin before 2.640 allows mailboxes/detach.cgi XSS via an SVG document attachment that is viewed in the mailboxes component, because image/svg+xml is used instead of a safe type (e.g., text/plain).

Affected products

• Webmin Webmin: before 2.640 (fixed in 2.640)

Published 2026-05-27. Last modified 2026-06-17.