Synacor Zimbra Collaboration Suite (ZCS) Cross-site Scripting Vulnerability
Details
CISA date
2026-04-20
EPSS
0.2% probability · 39.7th percentile — 2026-04-20
Affected versions
Zimbra Collaboration Suite (ZCS)
Summary
Synacor Zimbra Collaboration Suite (ZCS) contains a cross-site scripting vulnerability that could allow attackers to execute arbitrary JavaScript within the user's session, potentially leading to unauthorized access to sensitive information.
Remediation
Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
Exploit info
No exploit-tagged NVD references in our cache; see the CISA KEV link below.
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