Synacor Zimbra Collaboration Suite (ZCS) Cross-Site Scripting (XSS) Vulnerability

Code

The project this record applies to. Exploit listings stay in References.

No public source repository is identified for this product.

Timeline

Detection, updates, and resolution for this record.

1. Apr 20, 2022 · Catalog

   Detected

   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.

2. Apr 3, 2023 · CISA KEV

   Known exploited

   Apply updates per vendor instructions.

3. Apr 24, 2023 · CISA KEV

   Remediation due

   Apply updates per vendor instructions.

4. Jun 16, 2026 · Catalog

   Updated

   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.

Affected

• cpe synacor/zimbra collaboration suite9.0.0
• vendor Synacor Zimbra Collaboration Suite (ZCS)version unspecified

Sources

• CISA KEVConfirmed exploitationCVE-2022-27926

  Synacor Zimbra Collaboration Suite (ZCS) contains a cross-site scripting vulnerability by allowing an endpoint URL to accept parameters without sanitizing.

  cisa.gov
• CVE.orgVulnerability recordCVE-2022-27926

  Official CVE identifier

  cve.org
• FIRST EPSSExploitation probabilityCVE-2022-27926

  30-day exploitation probability 17.6%

  first.org
• NIST NVDVulnerability recordCVE-2022-27926

  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.

  nvd.nist.gov

References

• CISA note · nvd.nist.gov
• CISA note · wiki.zimbra.com
• Release Notes · wiki.zimbra.com
• Vendor Advisory · wiki.zimbra.com
• US Government Resource · cisa.gov