CVE-2026-93642
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.
- Published Sep 25, 2026
- CVSS 9.3 critical
- 0.2% chance of exploitation in the next 30 days (EPSS)