Cross-site request forgery (CSRF) vulnerability in the login form in Zimbra Collaboration Suite (aka ZCS) before 8.6.0 Patch 10, 8.7.x before 8.7.11 Patch 2, and 8.8.x before 8.8.8 Patch 1 allows remote attackers to hijack the authentication of unspecified victims by leveraging failure to use a CSRF token.
blog.zimbra.com/2018/04/new-patches-for-you-zimbra-8-8-8-turing-patch-1-zimbra-8-7-11-patch-2/
blog.zimbra.com/2018/05/new-patches-zimbra-8-8-8-turing-patch-3-zimbra-8-7-11-patch-3-zimbra-8-6-0-patch-10/
wiki.zimbra.com/wiki/Security_Center
wiki.zimbra.com/wiki/Zimbra_Releases/8.6.0/P10
wiki.zimbra.com/wiki/Zimbra_Releases/8.7.11/P2
wiki.zimbra.com/wiki/Zimbra_Releases/8.8.8/P1
wiki.zimbra.com/wiki/Zimbra_Security_Advisories