CVE-2024-45515: Zimbra Collaboration

Medium severity, CVSS 6.1. EPSS: 0.3% chance of exploitation in the next 30 days.

An issue was discovered in Zimbra Collaboration (ZCS) through 10.1. A Cross-Site Scripting (XSS) vulnerability exists in Zimbra webmail due to insufficient validation of the content type metadata when importing files into the briefcase. Attackers can exploit this issue by crafting a file with manipulated metadata, allowing them to bypass content type checks and execute arbitrary JavaScript within the victim's session.

Affected products

• Zimbra Collaboration: up to and including 10.1.0

Published 2025-07-30. Last modified 2026-06-17.