CVE-2019-9621

synacor zimbra collaboration suite

Published 30 Apr 2019 · updated 17 Jun 2026 · Analyzed

7.5 High · CVSS 3.1, NVD

Exploited in the wild

CISA added this to its Known Exploited Vulnerabilities catalog on 7 Jul 2025, with a remediation deadline of 28 Jul 2025 for US federal agencies.

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.

Description

Zimbra Collaboration Suite before 8.6 patch 13, 8.7.x before 8.7.11 patch 10, and 8.8.x before 8.8.10 patch 7 or 8.8.x before 8.8.11 patch 3 allows SSRF via the ProxyServlet component.

References

packetstormsecurity.com/files/152487/Zimbra-Collaboration-Autodiscover-Servlet-XXE-ProxyServlet-SSRF.html · Exploit, Third Party Advisory, VDB Entry
packetstormsecurity.com/files/153190/Zimbra-XML-Injection-Server-Side-Request-Forgery.html · Exploit, Third Party Advisory, VDB Entry
www.rapid7.com/db/modules/exploit/linux/http/zimbra_xxe_rce · Exploit, Third Party Advisory
blog.tint0.com/2019/03/a-saga-of-code-executions-on-zimbra.html · Third Party Advisory
blog.zimbra.com/2019/03/9826/ · Vendor Advisory
bugzilla.zimbra.com/show_bug.cgi?id=109127 · Issue Tracking
wiki.zimbra.com/wiki/Security_Center · Release Notes, Vendor Advisory
wiki.zimbra.com/wiki/Zimbra_Security_Advisories · Vendor Advisory
www.exploit-db.com/exploits/46693/ · Exploit, Third Party Advisory, VDB Entry
www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2019-9621 · US Government Resource