CVE-2024-42008: Roundcube Webmail

Critical severity, CVSS 9.3. EPSS: 34.2% chance of exploitation in the next 30 days.

A Cross-Site Scripting vulnerability in rcmail_action_mail_get->run() in Roundcube through 1.5.7 and 1.6.x through 1.6.7 allows a remote attacker to steal and send emails of a victim via a malicious e-mail attachment served with a dangerous Content-Type header.

Affected products

• Roundcube Webmail: before 1.5.8 (fixed in 1.5.8); from 1.6.0, before 1.6.8 (fixed in 1.6.8)

Published 2024-08-05. Last modified 2026-06-17.