CVE-2026-73571
Last modified
CVE-2026-73571 is a medium-severity vulnerability rated 4.3/10 on the CVSS scale. 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. EPSS estimates a 0.17% chance of exploitation in the next 30 days.
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.
Metrics
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Synacor | Zimbra Collaboration Suite | < 10.1.17 |
References
- https://wiki.zimbra.com/wiki/Security_CenterVendor Advisory
- https://wiki.zimbra.com/wiki/Zimbra_Security_AdvisoriesVendor Advisory
Timeline
- Published
- Last Modified
- Status
- Analyzed
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