CVE-2024-45513: Synacor Zimbra Collaboration Suite

Medium severity, CVSS 4.8. EPSS: 0.4% chance of exploitation in the next 30 days.

An issue was discovered in Zimbra Collaboration (ZCS) through 10.1. A stored Cross-Site Scripting (XSS) vulnerability exists in the /modern/contacts/print endpoint of Zimbra webmail. This allows an attacker to inject and execute arbitrary JavaScript code in the context of the victim's browser when a crafted vCard (VCF) file is processed and printed. This could lead to unauthorized actions within the victim's session.

Affected products

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

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