CVE-2020-13653: Synacor Zimbra Collaboration Suite

Medium severity, CVSS 6.1. EPSS: 1.4% chance of exploitation in the next 30 days.

An XSS vulnerability exists in the Webmail component of Zimbra Collaboration Suite before 8.8.15 Patch 11. It allows an attacker to inject executable JavaScript into the account name of a user's profile. The injected code can be reflected and executed when changing an e-mail signature.

Affected products

• Synacor Zimbra Collaboration Suite: before 8.8.15 (fixed in 8.8.15); version 8.8.15 only

Published 2020-07-02. Last modified 2026-06-17.