CVE Watch—

CVE-2022-27926

Synacor Zimbra Collaboration Suite (ZCS) Cross-Site Scripting (XSS) Vulnerability

CVSS

—

No CVSS

EPSS

17.6%

p97

KEV

YES

Apr 3, 2023

Exploit Today

0-100

Published: — · Last modified: —

EPSS · 30d

17.3%EPSS · 30 days17.6%

2026-06-302026-07-16

KEV catalog record

Product

Synacor / Zimbra Collaboration Suite (ZCS)

Vulnerability

Synacor Zimbra Collaboration Suite (ZCS) Cross-Site Scripting (XSS) Vulnerability

Added to KEV

Apr 3, 2023

Remediate by

Apr 24, 2023

Known ransomware use

Summary description

Synacor Zimbra Collaboration Suite (ZCS) contains a cross-site scripting vulnerability by allowing an endpoint URL to accept parameters without sanitizing.

Required action

Apply updates per vendor instructions.

Notes

https://wiki.zimbra.com/wiki/Security_Center; https://nvd.nist.gov/vuln/detail/CVE-2022-27926

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