Synacor Zimbra Collaboration Suite (ZCS) Server-Side Request Forgery Vulnerability. Actively exploited: CISA added this vulnerability to its Known Exploited Vulnerabilities catalog on 17/02/2026. Patch affected systems as an emergency.
| Package | Affected versions | Patched versions |
|---|---|---|
| zimbra collaboration suite | = 8.8.15< 8.8.15 | 8.8.15 |
Zimbra Collaboration Suite (ZCS) before 8.8.15 Patch 7 allows SSRF when WebEx zimlet is installed and zimlet JSP is enabled.
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