CVE-2026-50055 — Zimbra Collaboration Suite Sieve Notify Filter Action Bypasses Mail Forwarding Restriction via Variable Expansion
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 co…
Published: 2026-10-08 · CVSS: 6.5 · CVSS 3.1
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.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7