CVE-2026-73571

Published: Aug 13, 2026Modified: Aug 28, 2026

4.3

Vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N

Exploitability: 2.8 / Impact: 1.4

Source: NVD

Description

An authorization bypass vulnerability exists in Zimbra Collaboration (ZCS) before 10.1.17 due to improper authorization validation in delegated email sending functionality. An authenticated attacker can send specially crafted SOAP requests to impersonate another user and send emails without possessing the required delegation or send-as permissions. This occurs in the SaveDraftRequest SOAP handler.

Affected (1)

Products: Synacor: Zimbra Collaboration Suite

1 product

Zimbra Collaboration Suite

Configuration A

1 vulnerable

Vulnerable Software	Affected Versions
Synacor Zimbra Collaboration Suite	Before 10.1.17

Related CWEs

Incorrect Authorization

The product performs an authorization check when an actor attempts to access a resource or perform an action, but it does not correctly perform the check. This allows attackers to bypass intended access restrictions.

References (2)

https://wiki.zimbra.com/wiki/Security_Center

Source: cve@mitre.org

Vendor Advisory

https://wiki.zimbra.com/wiki/Zimbra_Security_Advisories

Source: cve@mitre.org

Vendor Advisory

Timeline

No history available yet.