CVE-2019-9621

unknown KEV

Published 2025-07-07 · Modified 2025-07-07

💬 Discuss on Community ✚ Propose mitigation

CVSS v3

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CVSS v4 NEW

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not yet in upstream

VIR risk

2.5

Description

Synacor Zimbra Collaboration Suite (ZCS) contains a server-side request forgery (SSRF) vulnerability via the ProxyServlet component.

CISA KEV

Vendor: Synacor
Product: Zimbra Collaboration Suite (ZCS)
Due date: 2025-07-28

Predictions

Exploit likelihood

99%

Patch ETA

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Heuristic predictions, AS-IS, for prioritization only.

Mitigations

No mitigations published for this CVE yet.

The vendor-content worker queues fetches as references arrive (check back in a few minutes). Or — if you've already worked around this in production — publish your fix to the community-verified tier.

✚ Propose a mitigation on Community → Mitigations published via the community go through AI scoring + 2 human reviewers + 7-day silent objection window before landing here with source_tier=community-verified.

Exploits

Public proof-of-concept code below. AS-IS, for defenders and authorised testing only.

Exploit-DB

EDB-46967 webapps jsp

k8gege · 2019-06-05

Zimbra < 8.8.11 - XML External Entity Injection / Server-Side Request Forgery

Source code queued for fetch — refresh in a moment.

EDB-46693 remote linux verified

Metasploit · 2019-04-12

Zimbra Collaboration - Autodiscover Servlet XXE and ProxyServlet SSRF (Metasploit)

Source code queued for fetch — refresh in a moment.

Metasploit modules

exploit_linux/http/zimbra_xxe_rce rank 600

Zimbra Collaboration Autodiscover Servlet XXE and ProxyServlet SSRF

Source fetch failed: fetch_error — view the original via the link above.

References

https://wiki.zimbra.com/wiki/Zimbra_Security_Advisories ; https://wiki.zimbra.com/wiki/Security_Center ; https://nvd.nist.gov/vuln/detail/CVE-2019-9621

Community-verified mitigations for this CVE will appear above when contributors publish them.

Verify integrity in audit chain (admin only). AS-IS.