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.
https://wiki.zimbra.com/wiki/Zimbra_Security_Advisories
https://wiki.zimbra.com/wiki/Zimbra_Releases/8.8.8/P1
https://wiki.zimbra.com/wiki/Zimbra_Releases/8.7.11/P2
https://wiki.zimbra.com/wiki/Zimbra_Releases/8.6.0/P10