Cve20207796 Zimbra Collaboration Suite Full Updated [UHD 2026]

CVE-2020-7796 is a vulnerability, a class of flaw where an attacker can coerce a vulnerable server into making arbitrary HTTP requests on their behalf.

: The patch specifically fixes the flaw by removing the vulnerable file: /opt/zimbra/zimlets-deployed/com_zimbra_webex/httpPost.jsp . cve20207796 zimbra collaboration suite full

If your business cannot immediately schedule a complete email platform maintenance window, use these structural workarounds: CVE-2020-7796 is a vulnerability, a class of flaw

is a critical Server-Side Request Forgery (SSRF) vulnerability affecting the Zimbra Collaboration Suite (ZCS) . This flaw allows an unauthenticated, remote attacker to bypass external network perimeters and manipulate the enterprise email server into executing unauthorized HTTP requests. Because Zimbra is a cornerstone of infrastructure for governments, financial institutions, and global enterprises, the Cybersecurity and Infrastructure Security Agency (CISA) added CVE-2020-7796 to its Known Exploited Vulnerabilities (KEV) catalog due to active exploitation in the wild. Technical Breakdown: Understanding the Flaw This flaw allows an unauthenticated, remote attacker to

Restrict outbound connections from the Zimbra server to only necessary external destinations to prevent the server from being used as a proxy for malicious requests.

Despite being originally identified in 2020, CVE-2020-7796 has seen a massive resurgence in activity. Security researchers observed a significant spike in exploitation attempts in early 2026, with nearly targeting the flaw globally. This surge prompted CISA to mandate federal agencies to apply fixes by March 10, 2026 . Remediation and Mitigation CVE-2020-7796 Detail - NVD

Scan for atypical file inclusion requests and unauthorized access patterns in server logs.