CVE-2023-34192

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

Synacor — Zimbra Collaboration Suite (ZCS)

Added to KEV catalog: 25 February 2025
Federal remediation due date: 18 March 2025
Weakness classification (CWE): CWE-79

CISA Description

Synacor Zimbra Collaboration Suite (ZCS) contains a cross-site scripting (XSS) vulnerability that allows a remote authenticated attacker to execute arbitrary code via a crafted script to the /h/autoSaveDraft function.

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.

Notes

https://wiki.zimbra.com/wiki/Zimbra_Security_Advisories ; https://nvd.nist.gov/vuln/detail/CVE-2023-34192

View on NVD View on MITRE CVE View full CISA catalog

More Synacor Vulnerabilities

CVE-2025-48700

Synacor Zimbra Collaboration Suite (ZCS) Cross-site Scripting Vulnerability

CVE-2025-66376

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

CVE-2020-7796

Synacor Zimbra Collaboration Suite (ZCS) Server-Side Request Forgery Vulnerability

CVE-2025-68645

Synacor Zimbra Collaboration Suite (ZCS) PHP Remote File Inclusion Vulnerability

CVE-2025-27915

Synacor Zimbra Collaboration Suite (ZCS) Cross-site Scripting Vulnerability

Confirm Your Exposure

Is this vulnerability present in your environment?

CRS delivers independent VAPT assessments that identify exactly which known-exploited vulnerabilities exist in your network, applications, and infrastructure.

Explore VAPT Services