CVE-2025-48700 - Synacor Zimbra Collaboration Suite (ZCS) Cross-site Scripting Vulnerability
Project:Synacor
Product:Zimbra Collaboration Suite (ZCS)
Date Added:2026-04-20Due Date:2026-04-23
Vulnerability Name
Synacor Zimbra Collaboration Suite (ZCS) Cross-site Scripting Vulnerability
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.
Known To Be Used in Ransomware Campaigns?
Unknown
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.
Additional Notes
https://wiki.zimbra.com/wiki/Zimbra_Security_Advisories
https://nvd.nist.gov/vuln/detail/CVE-2025-48700
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