medium6.1Known exploited
CVE-2025-48700
Synacor Zimbra Collaboration Suite (ZCS) Cross-site Scripting Vulnerability
Exploited in the wild
This vulnerability is on the CISA Known Exploited Vulnerabilities list, added 2026-04-20. Federal due date: 2026-04-23.
Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
Impact
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.
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| Synacor | Zimbra Collaboration Suite | from 10.0.0 before 10.0.12 from 10.1.0 before 10.1.4 Versions 8.8.15, 9.0.0 |