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CVE-2020-7796

CriticalPublished

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

Published: Feb 18, 2020
Updated: Feb 18, 2026
Assigning CNA: mitre
Evidence observed: Feb 17, 2026

Primary CVSS

9.8/ 10Critical

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CVE-2020-7796

CriticalPublished

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

Published: Feb 18, 2020
Updated: Feb 18, 2026
Assigning CNA: mitre
Evidence observed: Feb 17, 2026

Primary CVSS

9.8/ 10Critical

nvd · CVSS 3.1

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS probability estimate

84.4%

High · next 30 days

Percentile: 99.7%
Model date: Oct 17, 2026

EPSS is a statistical estimate, not a certainty or a measure of impact. Combine it with CVSS, KEV status, exposure and your environment.

CISA Known Exploited

This CVE appears in the CISA Known Exploited Vulnerabilities catalog.

Summary

Zimbra Collaboration Suite (ZCS) before 8.8.15 Patch 7 allows SSRF when WebEx zimlet is installed and zimlet JSP is enabled.

Sources

Repository evidence: Files: 1 · Repositories: 1

1 Template

Zimbra Collaboration Suite < 8.8.15 Patch 7 - Server-Side Request ForgeryTemplate
http/cves/2020/CVE-2020-7796.yaml
Nuclei Templates
DetectionEvidence observed: Sep 26, 2026Revision: 17f5725dc10cRelated tool
Declared conditions
- network: http($.protocol_keys)
- verification: word($.matchers[*].type)
- oob: interactsh_reference($.template_text)

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