CVE-2022-27926VulnerabilityPublished 04/03/2023Updated 10/24/2026
CVE-2022-27926: Synacor Zimbra Collaboration Suite (ZCS) Cross-Site Scripting (XSS) Vulnerability
Affects Synacor Zimbra Collaboration Suite (ZCS)Source CISA KEV
Severity
HighNo CVSS score published yet
- Exploitation
Actively exploited – in CISA KEV since 04/03/2023
- KEV deadline
- 04/24/2023
- EPSS
- 17.6% chance of exploitation in 30 days – higher than 97% of CVEs
What to do
CISA required action
Apply updates per vendor instructions.
Description
Synacor Zimbra Collaboration Suite (ZCS) contains a cross-site scripting vulnerability by allowing an endpoint URL to accept parameters without sanitizing.