CVE-2024-45518: Zimbra Collaboration

High severity, CVSS 8.8. EPSS: 20.7% chance of exploitation in the next 30 days.

An issue was discovered in Zimbra Collaboration (ZCS) 10.1.x before 10.1.1, 10.0.x before 10.0.9, 9.0.0 before Patch 41, and 8.8.15 before Patch 46. It allows authenticated users to exploit Server-Side Request Forgery (SSRF) due to improper input sanitization and misconfigured domain whitelisting. This issue permits unauthorized HTTP requests to be sent to internal services, which can lead to Remote Code Execution (RCE) by chaining Command Injection within the internal service. When combined with existing XSS vulnerabilities, this SSRF issue can further facilitate Remote Code Execution (RCE).

Affected products

• Zimbra Collaboration: from 10.0.0, before 10.0.9 (fixed in 10.0.9); version 8.8.15 only; version 9.0.0 only; version 10.1.0 only

Published 2024-10-22. Last modified 2026-06-17.