Cve20207796 Zimbra Collaboration Suite Full [verified] Jun 2026

If you cannot apply the patch immediately, you can implement these temporary workarounds to reduce your risk. However, these are .

If the WebEx zimlet is not required, it should be disabled. Ensure zimlet JSP is disabled unless strictly necessary. Network Segmentation:

: An attacker could abuse this flaw to force the Zimbra server to make unauthorized HTTP requests to arbitrary internal or external hosts. This can be leveraged to access sensitive information, potentially leading to full data exfiltration or combined with other exploits for Remote Code Execution (RCE).

Zimbra Collaboration Suite 8.8.15 Patch 7 or higher . Defensive Strategies and Remediation cve20207796 zimbra collaboration suite full

Because of insufficient input validation, a remote, unauthenticated attacker can send a specially crafted HTTP request to the server. This tricks the server into making further requests to other internal or external systems on the attacker's behalf. Why is this Dangerous? Unauthorized Access

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If upgrading is not immediately possible, administrators should disable the affected WebEx Zimlet to mitigate the risk. Conclusion

The following versions of Zimbra Collaboration Suite are affected:

An unauthenticated attacker with network access can exploit this SSRF to achieve several malicious objectives: If you cannot apply the patch immediately, you

Zimbra Collaboration Suite (ZCS) versions before 8.8.15 Patch 7 How to Fix It The primary remediation is to

At its core, the vulnerability is a classic case of insufficient input validation. The Zimbra server blindly trusted a URL provided by a remote, unauthenticated attacker and initiated a request to that location. The server executed this request with its own privileges, effectively acting as an unwitting proxy.

CVE-2020-7796 is a vulnerability in the Zimbra Collaboration Suite (ZCS) . It primarily affects versions of ZCS prior to 8.8.15 Patch 7 . Technical Vulnerability Overview Vulnerability Type: Server-Side Request Forgery (SSRF). Ensure zimlet JSP is disabled unless strictly necessary

Also monitor for: