Live › vulnerability › CVE-2019-9621
Go to dashboardZimbra Collaboration Suite has a server-side request forgery flaw in its ProxyServlet component. An attacker can make the mail server send requests to internal hosts or other targets on its behalf.
Summary written from the sources below. Check the originals before acting.
First seen by InfraStack 2026-10-23 19:11 UTC, 3h before NVD. All times on this page are UTC.
Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
| Product | Ecosystem | Affected | Fixed in |
|---|---|---|---|
| Synacor Zimbra Collaboration Suite (ZCS) | vendor | – | – |
| synacor zimbra collaboration suite | vendor | < 8.6.0 | 8.6.0 |
| synacor zimbra collaboration suite | vendor | >= 8.7.0, < 8.7.11 | 8.7.11 |
| synacor zimbra collaboration suite | vendor | >= 8.8.0, < 8.8.9 | 8.8.9 |
| synacor zimbra collaboration suite | vendor | = 8.6.0 | – |
| synacor zimbra collaboration suite | vendor | = 8.7.11 | – |
| synacor zimbra collaboration suite | vendor | = 8.8.9 | – |
| synacor zimbra collaboration suite | vendor | = 8.8.10 | – |
| synacor zimbra collaboration suite | vendor | = 8.8.11 | – |
Unknown from the sources.
Apply the mitigations from the vendor (Synacor/Zimbra) per CISA guidance, or discontinue use of the product if mitigations are unavailable.
Each row is the first time that source carried this signal. The analyst’s rows are its own findings.
Synacor Zimbra Collaboration Suite (ZCS) contains a server-side request forgery (SSRF) vulnerability via the ProxyServlet component.
CISA required 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.
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