CVE-2022-43515

X-Forwarded-For header is active by default causes access to Zabbix sites in maintenance mode

Published Dec 12, 2022 CVSS 3.1 · 5.3 Medium EPSS 1.3% KEV · Not listed
Description
Zabbix Frontend provides a feature that allows admins to maintain the installation and ensure that only certain IP addresses can access it. In this way, any user will not be able to access the Zabbix Frontend while it is being maintained and possible sensitive data will be prevented from being disclosed. An attacker can bypass this protection and access the instance using IP address not listed in the defined range.

Remediation

Vendor Solution

To remediate this vulnerability, apply the updates listed in the 'Unaffected' section to appropriate products or use the workaround


Vendor Workaround

If an immediate update is not possible, limit network access to Zabbix Frontend during the maintenance window.

Tracking

Sign in to view the affected projects.

Advisories

Source ID Title
Debian DLA Debian DLA DLA-3538-1 zabbix security update
Debian DLA Debian DLA DLA-3909-1 zabbix security update
EUVD EUVD EUVD-2022-46513 Zabbix Frontend provides a feature that allows admins to maintain the installation and ensure that only certain IP addresses can access it. In this way, any user will not be able to access the Zabbix Frontend while it is being maintained and possible sensitive data will be prevented from being disclosed. An attacker can bypass this protection and access the instance using IP address not listed in the defined range.
History
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'poc', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
Zabbix
Published
Updated
Nov 3, 2025, 9:46 PM
Reserved
Oct 19, 2022, 12:00 AM
Status
Modified
Published
Dec 5, 2022, 7:15 PM
Modified
Jun 17, 2026, 5:06 AM