CVE-2023-24031: Zimbra Collaboration

Medium severity, CVSS 6.1. EPSS: 0.4% chance of exploitation in the next 30 days.

An issue was discovered in Zimbra Collaboration (ZCS) 9.0 and 8.8.15. XSS can occur, via one of attributes of the webmail /h/ endpoint, to execute arbitrary JavaScript code, leading to information disclosure.

Affected products

• Zimbra Collaboration: version 9.0.0 only

Published 2023-06-15. Last modified 2026-06-17.