PT-2026-71677 · Zimbra+1 · Collaboration+2
CVE-2026-73571
·
Published
2026-08-13
·
Updated
2026-08-28
CVSS v3.1
4.3
Medium
| Vector | AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N |
Name of the Vulnerable Software and Affected Versions
Zimbra Collaboration (ZCS) versions prior to 10.1.17
Description
An authorization bypass occurs due to improper validation in the delegated email sending functionality. An authenticated attacker can send specially crafted SOAP requests to the
SaveDraftRequest SOAP handler to impersonate another user and send emails without the necessary delegation or send-as permissions.Recommendations
Update Zimbra Collaboration (ZCS) to version 10.1.17 or later.
Fix
Incorrect Authorization
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Weakness Enumeration
Related Identifiers
Affected Products
Collaboration
Zimbra
Zimbra Collaboration Suite