CVE-2026-73571
Low · 3.1CVSS
3.1
EPSS
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Published
Aug 13, 2026
CISA due date
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The record
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 packages
| Ecosystem | Package | Introduced | Fixed |
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