CVE-2020-7796

Product

Synacor / Zimbra Collaboration Suite

Vulnerability

Synacor Zimbra Collaboration Suite (ZCS) Server-Side Request Forgery Vulnerability

Added to KEV

Feb 17, 2026

Remediate by

Mar 10, 2026

Known ransomware use

No

Summary description

Synacor Zimbra Collaboration Suite (ZCS) contains a server-side request forgery vulnerability if WebEx zimlet installed and zimlet JSP is enabled.

Required action

Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

Notes

https://wiki.zimbra.com/wiki/Zimbra_Releases/8.8.15/P7 ; https://nvd.nist.gov/vuln/detail/CVE-2020-7796