---
id: "CVE-2022-27926"
kind: "vulnerability"
aliases: ["CVE-2022-27926"]
title: "synacor zimbra collaboration suite: A reflected cross-site scripting (XSS) vulnerability in the /public/launchNewWindow.jsp component of Zimbra\u2026"
severity: "medium"
cvss: 6.1
epss: null
exploited: true
status: "open"
category: "package"
products: [{"name": "Synacor Zimbra Collaboration Suite (ZCS)", "fixed": [], "affected": "", "ecosystem": "vendor"}, {"name": "synacor zimbra collaboration suite", "fixed": [], "affected": "= 9.0.0", "ecosystem": "vendor"}]
ecosystems: ["vendor"]
tags: ["email", "exploited", "package", "self-hosted", "zimbra"]
not_affected_if: ["managed-hosting"]
published_at: "2022-04-21T00:15:08+00:00"
first_seen_at: "2026-10-23T19:11:52+00:00"
updated_at: "2026-10-23T22:29:04+00:00"
sources: [{"source": "kev", "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?search_api_fulltext=CVE-2022-27926", "first_seen_at": "2026-10-23T19:11:52+00:00"}, {"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2022-27926", "first_seen_at": "2026-10-23T22:29:04+00:00"}]
---

# synacor zimbra collaboration suite: A reflected cross-site scripting (XSS) vulnerability in the /public/launchNewWindow.jsp component of Zimbra…

Zimbra Collaboration Suite has a cross-site scripting flaw: an endpoint accepts URL parameters without sanitizing them. An attacker can get script to run in a victim's browser session, which can expose their mail and account actions.

_Summary, check and fix written by a model from the sources; labelled as such._

## Affected

- vendor:Synacor Zimbra Collaboration Suite (ZCS) affected ? fixed ?
- vendor:synacor zimbra collaboration suite affected = 9.0.0 fixed ?

## Fix

Apply the vendor update per Synacor/Zimbra instructions, as CISA requires; the fixed version is unknown from these sources.

## Timeline

- 2026-10-23T19:11:52+00:00 kev https://www.cisa.gov/known-exploited-vulnerabilities-catalog?search_api_fulltext=CVE-2022-27926
- 2026-10-23T22:29:04+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2022-27926

## From the sources

A reflected cross-site scripting (XSS) vulnerability in the /public/launchNewWindow.jsp component of Zimbra Collaboration (aka ZCS) 9.0 allows unauthenticated attackers to execute arbitrary web script or HTML via request parameters.

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_Free to read at a human pace. An API with keys and an MCP server are in preparation; early access: hello@infrastack.ai_