[ CVE-2026-10631 · Published 8 Oct 2026 ]

Vulnerability in Zimbra Collaboration Suite

CVSS 6.5 EPSS <1%No fix listed yet

[ Description ]Official description

An authorization bypass in the EWS FindItem handler of Zimbra Collaboration Suite 10.1.0 through 10.1.19 allows an authenticated user with EWS enabled to read complete mailbox items, including raw MIME and attachments, from arbitrary local accounts without a share or delegation grant.

[ Fixes ]Fixes and patches

No fix or interim patch is linked from our sources yet. Check the vendor references below and limit exposure of affected systems until a fix is available.