CVE-2023-45207: Zimbra Collaboration

Medium severity, CVSS 6.1. EPSS: 0.5% chance of exploitation in the next 30 days.

An issue was discovered in Zimbra Collaboration (ZCS) 8.8.15, 9.0, and 10.0. An attacker can send a PDF document through mail that contains malicious JavaScript. While previewing this file in webmail in the Chrome browser, the stored XSS payload is executed. (This has been mitigated by sanitising the JavaScript code present in a PDF document.)

Affected products

• Zimbra Collaboration: from 10.0.0, before 10.0.5 (fixed in 10.0.5); version 8.8.15 only; version 9.0.0 only

Published 2024-02-13. Last modified 2026-06-17.