Cve20207796 Zimbra Collaboration Suite [verified] Full (2025-2026)

For more technical details and patch instructions, visit the Zimbra Tech Center Release Notes . CVE-2020-7796 Detail - NVD

Upgrade to Zimbra Collaboration 8.8.15 Patch 7 or later . This version contains the necessary security fixes for this SSRF flaw.

To secure your environment, the following actions are recommended: cve20207796 zimbra collaboration suite full

CVE-2020-7796 is a server-side request forgery (SSRF) vulnerability in the Zimbra Collaboration Suite (ZCS) . It allows unauthenticated remote attackers to force the server to make HTTP requests to arbitrary internal or external hosts, effectively using the server as a proxy to bypass firewalls or access sensitive internal data. Vulnerability Details CVE ID: CVE-2020-7796 CVSS Score: 9.8 (Critical) Vulnerability Type: SSRF (CWE-918)

Implement network-level restrictions to limit the Zimbra server’s outbound connections only to trusted destinations. For more technical details and patch instructions, visit

In some scenarios, it may be possible to steal login credentials or inject malware through chained exploits. Current Threat Status

Insufficient validation of user-supplied URLs within a Zimbra application component. Technical Impact To secure your environment, the following actions are

After upgrading, use the zmcontrol -v command to ensure the correct version is active.

While the vulnerability was first identified in 2020, it remains a major threat. , citing active exploitation in the wild. Organizations were given a due date of March 10, 2026, to apply mitigations. Affected Versions

Attackers may gain unauthorized access to sensitive internal information or resources.