[ CVE-2026-50055 · Published 8 Oct 2026 ]
Vulnerability in Zimbra Collaboration Suite
CVSS 6.5
EPSS <1%No fix listed yet
[ Description ]Official description
A policy-enforcement flaw in Zimbra Collaboration Suite allows an authenticated user to bypass disabled mail forwarding by using a Sieve notify action to send copies of email content and headers to an arbitrary address.
[ 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.