To prevent exploitation of this vulnerability, administrators should:
Security Vulnerability Report: CVE-2020-7796 Target System: Synacor Zimbra Collaboration Suite (ZCS) Vulnerability Type: Server-Side Request Forgery (SSRF) Date of Vulnerability: Originally reported in late 2020; recently noted as actively exploited as of February 2026 1. Executive Summary CVE-2020-7796 cve20207796 zimbra collaboration suite full
High/Critical (depending on network architecture and internal service exposure). 5. Remediation & Mitigation Remediation & Mitigation An attacker can exploit this
An attacker can exploit this vulnerability by sending a crafted HTTP request to the vulnerable endpoint, which can lead to the execution of arbitrary code on the system. This can allow the attacker to gain unauthorized access to sensitive data, disrupt email services, or even take control of the entire system. Remediation and Patching
In some scenarios, SSRF can be a stepping stone to remote code execution (RCE) or further network pivot attacks. Remediation and Patching