CriticalCritical vulnerability

CVE-2026-93642 (CVSS 9.3)

NVD · officialPublished Sep 25, 2026Risk 50/100

An unauthenticated sender can forge a share notification that triggers stored XSS when a signed-in Zimbra Modern recipient clicks Accept Share, allowing the attacker to access mailbox data and act as the victim.

Technical details

CVSS

9.3

AV:NetworkAC:LowPR:NoneUI:RequiredC:HighI:HighA:None

Evidence and sources

This record is attributed to NVD. Exploitation status and remediation guidance are kept separate from the vulnerability's technical severity.

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