Executive brief
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.
Junglewise Threat Intelligence
CVE-2026-93642: An unauthenticated sender can forge a share notification that triggers stored XSS when a signed-in Zimbra Modern recipient clicks Accept Sha
CVE-2026-93642 · Severity: critical · CVSS 9.3 · Published 2026-09-25