If immediate patching is not possible, security teams should implement the following Acunetix-recommended controls :
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
: Immediately upgrade Zimbra Collaboration Suite to version 8.8.15 Patch 7 or later . Download the patch from the official Zimbra website and follow the standard upgrade procedures. cve20207796 zimbra collaboration suite full
: Attackers can map internal networks and identify other vulnerable services for further attacks.
The U.S. Cybersecurity and Infrastructure Security Agency (CISA) added this flaw to its Known Exploited Vulnerabilities (KEV) catalog in February 2026 due to active exploitation in the wild. 🛡️ Vulnerability Overview : Server-Side Request Forgery (SSRF) CVSS v3.1 Score : 9.8 (Critical) If immediate patching is not possible, security teams
In the world of cybersecurity, vulnerabilities are often discussed among a mix of panic and confusion. One such instance involves the keyword "CVE-2020-27996 Zimbra Collaboration Suite Full." A web search for this term quickly leads to an unexpected discovery: the official MITRE CVE entry for CVE-2020-27996 actually describes a completely unrelated software application called (a .NET e-commerce platform), not the Zimbra Collaboration Suite (ZCS). This can be confusing for system administrators and security researchers trying to protect their Zimbra email servers.
CVE-2020-7796 is a Server-Side Request Forgery (SSRF) vulnerability in the Synacor Zimbra Collaboration Suite (ZCS) that allows unauthenticated remote attackers to force the server to send HTTP requests to arbitrary internal or external destinations. Rated with a CVSS score of 9.8 , this flaw recently gained renewed attention after being added to CISA's Known Exploited Vulnerabilities (KEV) Catalog in February 2026 due to active exploitation in the wild. Technical Overview the vulnerability affects the /zimbraAdmin endpoint
The vulnerability is caused by a lack of proper validation and sanitization of user-input data in the Zimbra Collaboration Suite's web application. Specifically, the vulnerability affects the /zimbraAdmin endpoint, which allows administrators to manage the platform.