CVE-2026-62642: Roundcube Webmail

Medium severity, CVSS 6.5. EPSS: 0.5% chance of exploitation in the next 30 days.

In Roundcube Webmail before 1.6.17 and 1.7.x before 1.7.2, an infinite loop was discovered in the TNEF decoder, which may lead to denial of service upon opening an email with a TNEF attachment.

Affected products

• Roundcube Webmail: from 1.6.0, before 1.6.17 (fixed in 1.6.17); from 1.7.0, before 1.7.2 (fixed in 1.7.2)

Published 2026-07-14. Last modified 2026-07-20.