CVE-2026-93629mediumCWE-290

CVE-2026-93629: fallo de gravedad media en Zimbra Collaboration Suite

Zimbra Collaboration Suite Calendar Processing Authentication Bypass via Forged iCalendar REQUEST Organizer Identity

Publicada el · Actualizada el

Seguir esta CVE+ Monitorear Zimbra Collaboration Suite

Aviso por correo cuando entre en el KEV, tenga PoC pública o suba de nota.

13Vexday Risk Score

Sin señal de explotación. Ningún artefacto público de explotación conocido hasta ahora.

ssvc Trackcvss 5.3epss 0.3%
An organizer authentication vulnerability in Zimbra Collaboration Suite (ZCS) allows an unauthenticated email sender to insert calendar invitations attributed to another user. The email delivery path permits external invitations but does not verify that the message sender is authorized to use the iCalendar ORGANIZER identity. When automatic invitation insertion is enabled, a crafted REQUEST component creates an event containing attacker-selected meeting details and reminders under a forged organizer without recipient interaction. No corresponding event is created in the claimed organizer's calendar. ZCS 10.1.16 and 10.1.21 are affected.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
Productos afectados
Zimbra · Zimbra Collaboration Suite
CVEs relacionadas — Zimbra Collaboration Suite

En el mismo producto, de las más peligrosas a las menos.

CVE-2026-115785MEDIUMZimbra Collaboration Suite Data Source Test SMTP Command Injection via Unsanitized Email AddressEPSS 0.7%CVE-2026-115786MEDIUMZimbra Collaboration Suite Shared-File Mailbox Quota Accounting Error Enables Quota ExhaustionEPSS 0.4%CVE-2026-93639HIGHZimbra Collaboration Suite Missing Authorization in ConfigureZimlet Enables Delegated Administrator Privilege EscalationEPSS 0.4%CVE-2026-50055MEDIUMZimbra Collaboration Suite Sieve Notify Filter Action Bypasses Mail Forwarding Restriction via Variable ExpansionEPSS 0.4%CVE-2026-50056HIGHZimbra Collaboration Suite Local Privilege Escalation via zmmailboxdmgr JVM Argument InjectionEPSS 0.3%CVE-2026-93636MEDIUMZimbra Collaboration Suite LDAP Filter Injection via Calendar Resource Attribute NameEPSS 0.3%