February 17, 2026 · Applied Cybernetics Group
CVE-2020-7796 — Synacor Zimbra Collaboration Suite
Synacor Zimbra Collaboration Suite (ZCS) Server-Side Request Forgery Vulnerability
- Added to KEV
2026-02-17- Federal due date
2026-03-10- Vendor
- Synacor
- Product
- Zimbra Collaboration Suite
- EPSS
- 99.8th percentile (score 0.933, as of
2026-06-08) - NVD CVSS v3.1
- —
- Ransomware use
- Unknown
- Upstream
- https://nvd.nist.gov/vuln/detail/CVE-2020-7796
CISA short 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.