CVE-2026-50055

medium

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.

References

https://wiki.zimbra.com/wiki/Zimbra_Security_Advisories

https://www.securityweek.com/zimbra-update-patches-critical-vulnerabilities/

https://thehackernews.com/2026/07/zimbra-patches-critical-snmp-command.html

https://github.com/HORKimhab/CVE-2026-50055

https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-95098

Details

Source: Mitre, NVD

Published: 2026-10-08

Updated: 2026-10-08

Risk Information

CVSS v2

Base Score: 6.8

Vector: CVSS2#AV:N/AC:L/Au:S/C:C/I:N/A:N

Severity: Medium

CVSS v3

Base Score: 6.5

Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N