CVE-2026-115786

A mailbox quota-accounting vulnerability in Zimbra Collaboration Suite ZCS allows an authenticated user to consume another user’s mailbox quota by repeatedly sharing and revoking a document. Creation of the recipient’s shared-file record charges the document size to mailbox-wide usage. Revocation...

EUVD-2026-109080

A mailbox quota-accounting vulnerability in Zimbra Collaboration Suite ZCS allows an authenticated user to consume another user’s mailbox quota by repeatedly sharing and revoking a document. Creation of the recipient’s shared-file record charges the document size to mailbox-wide usage. Revocation...

PT-2026-122108

A mailbox quota-accounting vulnerability in Zimbra Collaboration Suite ZCS allows an authenticated user to consume another user’s mailbox quota by repeatedly sharing and revoking a document. Creation of the recipient’s shared-file record charges the document size to mailbox-wide usage. Revocation...