CVE-2024-45514: Synacor Zimbra Collaboration Suite

Medium severity, CVSS 5.4. EPSS: 0.6% chance of exploitation in the next 30 days.

An issue was discovered in Zimbra Collaboration (ZCS) through v10.1. A Cross-Site Scripting (XSS) vulnerability exists in one of the endpoints of Zimbra Webmail due to insufficient sanitization of the packages parameter. Attackers can bypass the existing checks by using encoded characters, allowing the injection and execution of arbitrary JavaScript within a victim's session.

Affected products

• Synacor Zimbra Collaboration Suite: before 8.8.15 (fixed in 8.8.15); from 10.0.0, before 10.0.9 (fixed in 10.0.9); version 8.8.15 only; version 9.0.0 only; version 10.1.0 only

Published 2024-11-21. Last modified 2026-06-17.