CVE-2026-73575
LowCVSS 3.1Summary
In Zimbra Collaboration (ZCS) before 10.1.17, a Cross-Site Request Forgery (CSRF) vulnerability exists in the Exchange Web Services (EWS) endpoint of Zimbra Collaboration (ZCS) due to insufficient validation of request content types. An attacker can exploit this vulnerability by causing an authenticated user to submit a crafted request, potentially allowing unauthorized actions to be performed on behalf of the victim.
Risk Assessment
The risk includes the possibility of performing unauthorized actions in the context of an authenticated user, such as changing settings, sending messages, or other operations. This can lead to data integrity and confidentiality breaches.
Recommendation
It is recommended to immediately upgrade Zimbra Collaboration to version 10.1.17 or later. Also implement CSRF protection mechanisms such as anti-CSRF tokens and header validation.
Original NVD description (English source)
In Zimbra Collaboration (ZCS) before 10.1.17, a Cross-Site Request Forgery (CSRF) vulnerability exists in the Exchange Web Services (EWS) endpoint of Zimbra Collaboration (ZCS) due to insufficient validation of request content types. An attacker can exploit this vulnerability by causing an authenticated user to submit a crafted request, potentially allowing unauthorized actions to be performed on behalf of the victim.