CVE-2018-20160

CriticalCVSS 9.8/10Last modified Jun 17, 2026

Description

ZxChat (aka ZeXtras Chat), as used for zimbra-chat and zimbra-talk in Synacor Zimbra Collaboration Suite 8.7 and 8.8 and in other products, allows XXE attacks, as demonstrated by a crafted XML request to mailboxd.

Metrics

CVSS 3.0 9.8/10CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Weakness enumeration

CWE-611

Affected software

Vendor	Product	Versions
n/a	n/a	n/a

References

https://bugzilla.zimbra.com/show_bug.cgi?id=109093Issue Tracking, Third Party Advisory
https://wiki.zimbra.com/wiki/Security_CenterRelease Notes, Vendor Advisory
https://wiki.zimbra.com/wiki/Zimbra_Security_AdvisoriesVendor Advisory
https://bugzilla.zimbra.com/show_bug.cgi?id=109093Issue Tracking, Third Party Advisory
https://wiki.zimbra.com/wiki/Security_CenterRelease Notes, Vendor Advisory
https://wiki.zimbra.com/wiki/Zimbra_Security_AdvisoriesVendor Advisory

Timeline

Published: May 29, 2019
Last modified: Jun 17, 2026
NVD status: Modified

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