CVE-2020-7796 | BDVDB-2026-131111 Detail

SynacorZimbra Collaboration Suite

Description#

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

Impact#

Per CVSS v3.1: confidentiality impact high, integrity impact high, availability impact high. Attack vector: network.

Weaknesses#

CWE-918 Server-Side Request Forgery (SSRF)

References#

Exploit#

No public exploit known

History#

Version 12020-02-18Record published in the CVE List.
Version 22026-02-18Most recent update recorded in the CVE List.

Published

Published: 2020-02-18
Last modified: 2026-02-18

Vendor information

Vendor: Synacor
Product: Zimbra Collaboration Suite

All Synacor vulnerabilities

Score

9.8 Critical

EPSS

93.5%, Very High

Estimated chance of exploitation in the next 30 days. EPSS percentile: 99.8.

KEV

Yes

Listed in the CISA Known Exploited Vulnerabilities catalog.

Impact

Server-Side Request Forgery

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.

Affected Systems

No version data in the source record.

Scoring System

CVSS v4.0

Not available

CVSS v3.1

9.8 Critical

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

Metric breakdown
Attack Vector	Network
Attack Complexity	Low
Privileges Required	None
User Interaction	None
Scope	Unchanged
Confidentiality	High
Integrity	High
Availability	High

CVSS v3.0

Not available

CVSS v2

Not available

Source: CVE List v5 (record); CISA KEV (kev, action); FIRST EPSS (epss).