Critical (9.3) in roundcube webmail. EPSS 34% 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.
Severity
CVSS 3.1
9.3 critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:N
EPSS
34% chance of exploitation in the next 30 days; higher than 98% of CVEs (scores of 2026-10-31)