CVE-2026-73571 — Zimbra / Collaboration

CVE-2026-73571

Zimbra / Collaboration PUBLISHED

Description (CNA)

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 (CNA)

Vendor / product	Versions
Zimbra / Collaboration	affected 0 before 10.1.17

CWE

CWE-863

References

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

ADP enrichment

CISA-ADP

No English description supplied.

No references supplied.