CVE-2024-50599: Synacor Zimbra Collaboration Suite

Medium severity, CVSS 6.1. EPSS: 61.4% chance of exploitation in the next 30 days.

A reflected Cross-Site Scripting (XSS) vulnerability has been identified in Zimbra Collaboration Suite (ZCS) 8.8.15, affecting one of the webmail calendar endpoints. This arises from improper handling of user-supplied input, allowing an attacker to inject malicious code that is reflected back in the HTML response.

Affected products

• Synacor Zimbra Collaboration Suite: version 8.8.15 only

Published 2024-11-07. Last modified 2026-06-17.