Synacor Zimbra Collaboration Suite (ZCS) Cross-site Scripting Vulnerability
Synacor · Zimbra Collaboration Suite (ZCS)
Date added (CISA)
2026-04-20
Remediation due
2026-04-23
Known ransomware use
Not indicated
Remediation priority
P2 — past CISA due date
Description
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.