CVE-2011-4078: Roundcube Webmail

Medium severity, CVSS 5.0. EPSS: 2.3% chance of exploitation in the next 30 days.

include/iniset.php in Roundcube Webmail 0.5.4 and earlier, when PHP 5.3.7 or 5.3.8 is used, allows remote attackers to trigger a GET request for an arbitrary URL, and cause a denial of service (resource consumption and inbox outage), via a Subject header containing only a URL, a related issue to CVE-2011-3379.

Affected products

• Roundcube Webmail: up to and including 0.5.4; version 0.1 only; version 0.1.1 only; version 0.2 only; version 0.2.1 only; version 0.3 only; …

Published 2011-11-03. Last modified 2026-06-16.